Relevant bibliographies by topics / Turbine fluid-structure

Academic literature on the topic 'Turbine fluid-structure'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Turbine fluid-structure"

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Song, Ke, and Yuchi Kang. "Fluid-Structure Interactions Analysis of a Drag-Type Horizontal Axis Hydraulic Turbine." Journal of Physics: Conference Series 2404, no. 1 (December 1, 2022): 012001. http://dx.doi.org/10.1088/1742-6596/2404/1/012001.

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Abstract The Fluid-structure interaction characteristics on the two drag-type horizontal axis hydraulic turbinesare investigated. The results show that the two drag-type horizontal axis hydraulic turbines are suitable for operation under low flow rate and low TSR conditions. The Tuebine 2 has a higher CP value from TSR=0.5 to TSR=2.0, and has a lower CT value in the whole TSR rangethan the Turbine 1. The maximum stresses are at the blade root area, and the maximum deformations are at the blade tip for both turbines. The Turbine 1 has a higher stress level and total deformation than the Turbine 2. The frequency on 1st, 2nd, 3rd, 4th and 5th order vibration modes of the Turbine 1 is higher than the Turbine 2, and the 6th one is not. The results provide a reference for the drag-type horizontal-axis hydraulic turbines.
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Patel, Yogesh Ramesh. "FSI in Wind Turbines: A Review." International Journal of Recent Contributions from Engineering, Science & IT (iJES) 8, no. 3 (September 30, 2020): 37. http://dx.doi.org/10.3991/ijes.v8i3.16595.

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This paper provides a brief overview of the research in the field of Fluid-structure interaction in Wind Turbines. Fluid-Structure Interaction (FSI) is the interplay of some movable or deformable structure with an internal or surrounding fluid flow. Flow brought about vibrations of two airfoils used in wind turbine blades are investigated by using a strong coupled fluid shape interplay approach. The approach is based totally on a regularly occurring Computational Fluid Dynamics (CFD) code that solves the Navier-Stokes equations defined in Arbitrary Lagrangian-Eulerian (ALE) coordinates by way of a finite extent method. The need for the FSI in the wind Turbine system is studied and comprehensively presented.
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Lin, Dong Long, Zhao Pang, Ke Xin Zhang, and Shuang You. "Fluid-Structure Interaction Simulation of Wind Turbine." Applied Mechanics and Materials 678 (October 2014): 556–60. http://dx.doi.org/10.4028/www.scientific.net/amm.678.556.

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The model of wind turbine was created by CATIA software, and then the simulation for blades and wind field was conducted by ANSYS software. The phenomena, such as tip vortex of blade, center vortex, and spiral trailing edge vortex caused by the rotating wind turbine, were presented explicitly and the pressure distribution of wind field was obtained. This paper provides some guiding significance to the arrangement of wind turbine and the studies about loading, deformation, and stress of blades.
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Gong, Ru-Zhi, Hong-Jie Wang, Jun-Long Zhao, De-You Li, and Xian-Zhu Wei. "Influence of clearance parameters on the rotor dynamic character of hydraulic turbine shaft system." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 2 (April 9, 2013): 262–70. http://dx.doi.org/10.1177/0954406213484875.

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The study of rotor dynamic stability of hydraulic turbine system has become extremely important because of the increasing capacity, size, and inertia of large turbines. Crown clearance and band clearance in hydraulic turbines will influence the rotor dynamic characters of turbine shaft system. In this article, the character of the turbine shaft system under different clearance parameters is studied in order to observe how the clearance parameters influence the stability of hydraulic turbine. The relationship between the hydraulic turbine stability system and the turbine clearance structure is also analyzed. In this study, the force on the turbine rotor induced by fluid flow in clearances is described with the analytical solution of Reynolds equation obtained in the article, in which the fluid flow is considered to be incompressible and isothermal. And, the rotor dynamic character of the turbine system is calculated by NewMark direct integral method and non-linear forces obtained from Reynolds equation are implemented. Finally, principles related to the clearance parameters influencing the rotor dynamic character of turbine system are summarized.
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Zhang, Yuquan, Zhiqiang Liu, Chengyi Li, Xuemei Wang, Yuan Zheng, Zhi Zhang, Emmanuel Fernandez-Rodriguez, and Rabea Jamil Mahfoud. "Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine." Mathematics 10, no. 19 (October 7, 2022): 3674. http://dx.doi.org/10.3390/math10193674.

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Developing reliable tidal-energy turbines of a large size and capacity links to preservation of the structural safety and stability of the blades. In this study, a bidirectional fluid–structure coupling method was applied to analyze the hydrodynamic performance and structural characteristics of the blade of a tidal-stream turbine. Analyses were conducted on the transient and stable structural stresses, fatigue, and deformations under the influence of water depth and turbine rotational speed. The performance predictions with and without fluid–structure coupling are similar to measurements. The water-depth change has little effect on the stress and deformation change of the blade, while the turbine-speed change has the most significant effect on it. When the turbine just starts, the blade will be subject to a sudden change load. This is due to the increase in turbine speed, resulting in the sudden load. Similar to the trend of blade stress, the blade safety factor is lower near the root of the blade, and the turbine-speed change has a more significant impact on the blade structure’s safety. However, the number of stress cycles in the blade at different rotational speeds is within the safety range.
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Guerri, Ouahiba, Aziz Hamdouni, and Anas Sakout. "Fluid Structure Interaction of Wind Turbine Airfoils." Wind Engineering 32, no. 6 (December 2008): 539–57. http://dx.doi.org/10.1260/030952408787548875.

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Moraga, G., C. Valero, D. Valentín, M. Egusquiza, X. Xia, L. Zhou, and A. Presas. "Characterization of the Fluid Damping in Simplified Models of Pump-Turbines and High Head Francis Runners." IOP Conference Series: Earth and Environmental Science 1079, no. 1 (September 1, 2022): 012091. http://dx.doi.org/10.1088/1755-1315/1079/1/012091.

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Abstract In order to satisfy the power demand in the electrical grid, hydraulic turbine units frequently work under off-design operation conditions and pass through transient events. These operation conditions can lead to high vibration amplitudes in the turbine runners, decreasing their useful life, and in some cases to premature failures. To determine and to understand the behaviour of the fluid damping is a relevant topic, because this parameter limits the maximum amplitude in resonance conditions. The runner of some types of turbines, such as reversible pump-turbine and high head Francis turbine, can be modelled as a disk-like structure, due to their similar mode shapes. Because of this, in this work, the fluid damping of a vibrating disk was studied. The disk was submerged in water and was put in a resonant state at different vibration amplitudes. Moreover, this structure was excited at different distances to a rigid surface, in order to analyse the effects of the distance between the runner and the casing. The main effects on the fluid damping were determined and characterized, showing a dependency of the fluid damping ratio on the different parameters.
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Cheng, Tai Hong, and Il Kwon Oh. "Fluid-Structure Coupled Analyses of Composite Wind Turbine Blades." Advanced Materials Research 26-28 (October 2007): 41–44. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.41.

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The composite rotor blades have been widely used as an important part of the wind power generation systems because the strength, stiffness, durability and vibration of composite materials are all excellent. In composite laminated blades, the static and dynamic aeroelasticity tailoring can be performed by controlling laminate angle or stacking sequence. In this paper, the fluid-structure coupled analyses of 10kW wind turbine blades has been performed by means of the full coupling between CFD and CSD based finite element methods. Fiber enforced composites fabricated with three types of stacking sequences were also studied. First the centrifugal force was considered for the nonlinear static analyses of the wind turbine so as to predict the deformation of tip point in the length direction and maximum stress in the root of a wind turbine. And then, the aeroelastic static deformation was taken into account with fluid-structure interaction analysis of the wind turbine. The Arbitrary Lagrangian Eulerian Coordinate was used to compute fluid structure interaction analysis of the wind turbine by using ADINA program. The displacement and stress increased apparently with the increment of aerodynamic force, but under the condition of maximum rotation speed 140RPM of the wind turbine, the displacement and stress were in the range of safety.
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Shkara, Yasir, Martin Cardaun, Ralf Schelenz, and Georg Jacobs. "Aeroelastic response of a multi-megawatt upwind horizontal axis wind turbine (HAWT) based on fluid–structure interaction simulation." Wind Energy Science 5, no. 1 (January 28, 2020): 141–54. http://dx.doi.org/10.5194/wes-5-141-2020.

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Abstract. With the increasing demand for greener, sustainable, and economical energy sources, wind energy has proven to be a potential sustainable source of energy. The trend development of wind turbines tends to increase rotor diameter and tower height to capture more energy. The bigger, lighter, and more flexible structure is more sensitive to smaller excitations. To make sure that the dynamic behavior of the wind turbine structure will not influence the stability of the system and to further optimize the structure, a fully detailed analysis of the entire wind turbine structure is crucial. Since the fatigue and the excitation of the structure are highly depending on the aerodynamic forces, it is important to take blade–tower interactions into consideration in the design of large-scale wind turbines. In this work, an aeroelastic model that describes the interaction between the blade and the tower of a horizontal axis wind turbine (HAWT) is presented. The high-fidelity fluid–structure interaction (FSI) model is developed by coupling a computational fluid dynamics (CFD) solver with a finite element (FE) solver to investigate the response of a multi-megawatt wind turbine structure. The results of the computational simulation showed that the dynamic response of the tower is highly dependent on the rotor azimuthal position. Furthermore, rotation of the blades in front of the tower causes not only aerodynamic forces on the blades but also a sudden reduction in the rotor aerodynamic torque by 2.3 % three times per revolution.
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Lipian, Michal, Pawel Czapski, and Damian Obidowski. "Fluid–Structure Interaction Numerical Analysis of a Small, Urban Wind Turbine Blade." Energies 13, no. 7 (April 10, 2020): 1832. http://dx.doi.org/10.3390/en13071832.

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While the vast majority of the wind energy market is dominated by megawatt-size wind turbines, the increasing importance of distributed electricity generation gives way to small, personal-size installations. Due to their situation at relatively low heights and above-ground levels, they are forced to operate in a low energy-density environment, hence the important role of rotor optimization and flow studies. In addition, the small wind turbine operation close to human habitats emphasizes the need to ensure the maximum reliability of the system. The present article summarizes a case study of a small wind turbine (rated power 350 W @ 8.4 m/s) from the point of view of aerodynamic performance (efficiency, flow around blades). The structural strength analysis of the blades milled for the prototype was performed in the form of a one-way Fluid–Structure Interaction (FSI). Blade deformations and stresses were examined, showing that only minor deformations may be expected, with no significant influence on rotor aerodynamics. The study of an unorthodox material (PA66 MO polyamide) and application of FSI to examine both structural strength and blade deformation under different operating conditions are an approach rarely employed in small wind turbine design.
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Dissertations / Theses on the topic "Turbine fluid-structure"

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Nematbakhsh, Ali. "A Nonlinear Computational Model of Floating Wind Turbines." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-dissertations/170.

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The dynamic motion of floating wind turbines is studied using numerical simulations. Floating wind turbines in the deep ocean avoid many of the concerns with land-based wind turbines while allowing access to strong stable winds. The full three-dimensional Navier-Stokes equations are solved on a regular structured grid, using a level set method for the free surface and an immersed boundary method for the turbine platform. The tethers, the tower, the nacelle and the rotor weight are included using reduced order dynamic models, resulting in an efficient numerical approach which can handle nearly all the nonlinear wave forces on the platform, while imposing no limitation on the platform motion. Wind is modeled as a constant thrust force and rotor gyroscopic effects are accounted for. Other aerodynamic loadings and aero-elastic effects are not considered. Several tests, including comparison with other numerical, experimental and grid study tests, have been done to validate and verify the numerical approach. Also for further validation, a 100:1 scale model Tension Leg Platform (TLP) floating wind turbine has been simulated and the results are compared with water flume experiments conducted by our research group. The model has been extended to full scale systems and the response of the tension leg and spar buoy floating wind turbines has been studied. The tension leg platform response to different amplitude waves is examined and for large waves a nonlinear trend is seen. The nonlinearity limits the motion and shows that the linear assumption will lead to over prediction of the TLP response. Studying the flow field behind the TLP for moderate amplitude waves shows vortices during the transient response of the platform but not at the steady state, probably due to the small Keulegan-Carpenter number. The effects of changing the platform shape are considered and finally the nonlinear response of the platform to a large amplitude wave leading to slacking of the tethers is simulated. For the spar buoy floating wind turbine, the response to regular periodic waves is studied first. Then, the model is extended to irregular waves to study the interaction of the buoy with more realistic sea state. The results are presented for a harsh condition, in which waves over 17 m are generated, and linear models might not be accurate enough. The results are studied in both time and frequency domain without relying on any experimental data or linear assumption. Finally a design study has been conducted on the spar buoy platform to study the effects of tethers position, tethers stiffness, and platform aspect ratio, on the response of the floating wind turbine. It is shown that higher aspect ratio platforms generally lead to lower mean pitch and surge responses, but it may also lead to nonlinear trend in standard deviation in pitch and heave, and that the tether attachment points design near the platform center of gravity generally leads to a more stable platform in comparison with attachment points near the tank top or bottom of the platform.
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Li, Yuwei. "Coupled computational fluid dynamics/multibody dynamics method with application to wind turbine simulations." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/4681.

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A high fidelity approach coupling the computational fluid dynamics method (CFD) and multi-body dynamics method (MBD) is presented for aero-servo-elastic wind turbine simulations. The approach uses the incompressible CFD dynamic overset code CFDShip-Iowa v4.5 to compute the aerodynamics, coupled with the MBD code Virtual.Lab Motion to predict the motion responses to the aerodynamic loads. The IEC 61400-1 ed. 3 recommended Mann wind turbulence model was implemented in this thesis into the code CFDShip-Iowa v4.5 as boundary and initial conditions, and used as the explicit wind turbulence for CFD simulations. A drivetrain model with control systems was implemented in the CFD/MBD framework for investigation of drivetrain dynamics. The tool and methodology developed in this thesis are unique, being the first time with complete wind turbine simulations including CFD of the rotor/tower aerodynamics, elastic blades, gearbox dynamics and feedback control systems in turbulent winds. Dynamic overset CFD simulations were performed with the benchmark experiment UAE phase VI to demonstrate capabilities of the code for wind turbine aerodynamics. The complete turbine geometry was modeled, including blades and approximate geometries for hub, nacelle and tower. Unsteady Reynolds-Averaged Navier-Stokes (URANS) and Detached Eddy Simulation (DES) turbulence models were used in the simulations. Results for both variable wind speed at constant blade pitch angle and variable blade pitch angle at fixed wind speed show that the CFD predictions match the experimental data consistently well, including the general trends for power and thrust, sectional normal force coefficients and pressure coefficients at different sections along the blade. The implemented Mann wind turbulence model was validated both theoretically and statistically by comparing the generated stationary wind turbulent field with the theoretical one-point spectrum for the three components of the velocity fluctuations, and by comparing the expected statistics from the simulated turbulent field by CFD with the explicit wind turbulence inlet boundary from the Mann model. The proposed coupled CFD/MBD approach was applied to the conceptual NREL 5MW offshore wind turbine. Extensive simulations were performed in an increasing level of complexity to investigate the aerodynamic predictions, turbine performance, elastic blades, wind shear and atmospheric wind turbulence. Comparisons against the publicly available OC3 simulation results show good agreements between the CFD/MBD approach and the OC3 participants in time and frequency domains. Wind turbulence/turbine interaction was examined for the wake flow to analyze the influence of turbulent wind on wake diffusion. The Gearbox Reliability Collaborative project gearbox was up-scaled in size and added to the NREL 5MW turbine with the purpose of demonstrating drivetrain dynamics. Generator torque and blade pitch controllers were implemented to simulate realistic operational conditions of commercial wind turbines. Interactions between wind turbulence, rotor aerodynamics, elastic blades, drivetrain dynamics at the gear-level and servo-control dynamics were studied, showing the potential of the methodology to study complex aerodynamic/mechanic systems.
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Arini, Nu Rhahida. "The influence of trailing edge shape on fluid structure interaction of a vertical axis tidal turbine blade." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/417857/.

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The depletion of fossil fuel and the increase of fuel consumption globally create an increased demand for the use of renewable energy. Vertical axis tidal turbines are a promising renewable energy device which needs to be improved. One problem appears in its operation is the structural instability and noise coming from the vibration of the long slender vertical axis blades. The vibration is a result of fluid structure interaction between turbine blades and the unsteady tidal current. This interaction of the tides and the blade generates vortical features which can excite the turbine blades to vibrate and causes a tonal noise known as singing. The aim of this work is to predict the blade response and locked-in condition by controlling the vortex shedding. The vortex is controlled by modifying blade’s trailing edge shape. The modifications include truncated, sharp and rounded trailing edge shapes. The response is modeled by vibrations using a spring damper system. A 2D numerical model of a vertical axis tidal turbine blade is developed to resolve the vibration using OpenFOAM 2.2. The blade has 0.75 m chord length and 3.07×106 Re. The model employs the equivalence incoming velocity method which represents the actual unsteady tidal current by time varying velocity magnitude and angle of attack of the model incoming flow. The problem is examined by observing the force applied to a static blade, and a rotating three bladed vertical axis turbine primarily. This is to confirm that the mesh topology and selected boundary conditions are sufficient and robust to resolve the blade response model. The locked-in condition is clarified by the blade main frequencies, pressure distribution, displacement, and force coefficients. In addition to the reference trailing edge, three different trailing edge shapes were studied. From the results it can be seen that the response is sensitive to pitching motion, high blade initial angle of attack, high tidal velocity and low spring and damping constant blade material. The results also show that the blunt (conventional truncated) foil has the largest ability to control the turbine blade response which is demonstrated by the smallest amplitude and the least frequent turbine blade’s vibration. For all three trailing edge shapes, along with a more limited investigation of an asymmetric trailing edge all are shown to be able to shift the frequency of the resonant response. This will allow the designer to study the likely behaviour of their design. Overall, the developed methodology using a two-dimensional, three degree of freedom solution of the unsteady CFD around the foil is shown to provide useful insight to the tidal turbine designer at a reasonable computational cost.
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Lothodé, Corentin. "Modélisation des pales d'éoliennes ou d'hydroliennes en environnement naturel à l'aide d'un code fluide-structure." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMIR15.

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Ce travail porte sur la mise en œuvre de simulations sur des pales de machines tournantes. Une première partie de la thèse porte sur l’amélioration des performances du couplage fluide-structure. Des nouveaux algorithmes sont présentés. Une nouvelle méthode de déformation de maillage est évaluée. Les développements sont validés à partir de plusieurs cas tests. La deuxième partie porte sur l’application des avancées à des machines tournantes. Une première validation est faite sur une hydrolienne. La vibration d’une pale au passage du mat est étudiée. Enfin, des résultats sur une hydrolienne industrielle sont exposés
A methodology to simulate blades of turbines is developed. A first part is dedicated to improving the performance of the fluid-structure coupling. New algorithms are presented. A new mesh morphing solution is shown. Developments are validated on many test cases. A second part is dedicated to applying the developments on turbines. A first validation is made on a water turbine. The vibration of a blade interacting with a mast is studied. Finally, some results of an industrial water turbine are shown
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Hoerner, Stefan [Verfasser], and Dominique [Gutachter] Thévenin. "Characterization of the fluid-structure interaction on a vertical axis turbine with deformable blades / Stefan Joël Hoerner ; Gutachter: Dominique Thévenin." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2020. http://d-nb.info/1220036471/34.

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Hoerner, Stefan Joël [Verfasser], and Dominique [Gutachter] Thévenin. "Characterization of the fluid-structure interaction on a vertical axis turbine with deformable blades / Stefan Joël Hoerner ; Gutachter: Dominique Thévenin." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2020. http://d-nb.info/1220036471/34.

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Taymans, Claire. "Solving Incompressible Navier-Stokes Equations on Octree grids : towards Application to Wind Turbine Blade Modelling." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0157/document.

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Le sujet de la thèse est le développement d'un outil numérique qui permet de modéliser l'écoulement autour des pales d'éoliennes. Nous nous sommes intéressés à la résolution des équations de Navier-Stokes en incompressible sur des maillages de type octree où les échelles plus petites en proche parois ont été modélisées par la méthode dite des wall functions. Un procédé d'adaptation automatique du maillage (AMR) a été développé pour affiner le maillage dans les zones où la vorticité est plus importante. Le modèle de structure d'une pale d'éolienne a été également implémenté et couplé avec le modèle fluide car une application de l'outil numérique est l'étude des effets des rafales de vent sur les pales d'éolienne. Un travail expérimental a été mené sur une éolienne avec une mesure de vent en amont. Ces données permettent ainsi de calibrer et valider les modèles numériques développés dans la thèse
The subject of the thesis is the development of a numerical tool that allows to model the flow around wind blades. We are interested in the solving of incompressible Navier-Stokes equations on octree grids, where the smallest scales close to the wall have been modelled by the use of the so-called Wall Functions. An automatic Adaptive Mesh Refinement (AMR) process has been developed in order to refine the mesh in the areas where the vorticity is higher. The structural model of a real wind blade has also been implemented and coupled with the fluid model. Indeed, an application of the numerical tool is the study of the effects of wind gusts on blades. An experimental work has been conducted with an in-service wind turbine with the measurement of wind speed upstream. This data will allow to calibrate and validate the numerical models developed in the thesis
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Gissoni, Humberto de Camargo. "Método para análise da interação fluido-estrutura em travessas do pré-distribuidor de turbinas hidráulicas." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-11072016-153653/.

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Um dos grandes desafios enfrentados pelos fabricantes de turbinas hidráulicas é prevenir o aparecimento de vibrações induzidas pelo escoamento nas travessas do pré-distribuidor e pás do rotor. Considerando apenas as travessas, e atribuídos a tais vibrações, foram relatados 28 casos de trincas ou ruídos anormais nas últimas décadas, que acarretaram enormes prejuízos associados a reparos, atrasos e perda de geração. O estado da arte na prevenção destes problemas baseia-se na utilização de sofisticados, e caros, programas comerciais de dinâmica dos fluidos computacional para o cálculo transiente do fenômeno. Este trabalho faz uma ampla revisão bibliográfica e levantamento de eventos de trincas ou ruídos ocorridos em travessas nos últimos 50 anos. Propõe, então, um enfoque alternativo, baseado exclusivamente em ferramentas de código aberto. A partir de hipóteses simplificadoras devidamente justificadas, o problema é formulado matematicamente de forma bidimensional, no plano da seção transversal da travessa, levando em conta a interação fluido-estrutura. Nesta estratégia, as equações de Navier-Stokes são resolvidas pelo método dos elementos finitos por meio da biblioteca gratuita oomph-lib. Um código especial em C++ é desenvolvido para o problema de interação fluido-estrutura, no qual o fenômeno de turbulência é levado em consideração por meio de um algoritmo baseado no modelo de Baldwin-Lomax. O método proposto é validado por meio da comparação dos resultados obtidos com referências e medições disponíveis na literatura, que tratam de problemas de barras retangulares suportadas elasticamente. O trabalho finaliza com a aplicação do método a um estudo de caso envolvendo uma travessa particular.
One of the biggest challenges for hydraulic turbine manufacturers is to prevent vortex-induced vibration on the stay vanes and runner blades. Only regarding stay vanes, 28 cases of cracks or unusual noises attributed to such vibrations were reported in the past decades leading to huge costs due to repair, delays and lack of generation. The state of the art today is to use powerful and expensive commercial computational fluid dynamics software to address the required transient phenomena. The present work carries out a comprehensive survey on occurred events in stay vanes during the last 50 years. Then, an alternative approach, based only on free open-source tools, is proposed. From due justified simplifying assumptions, the problem is formulated two-dimensionally, in the stay vane cross section plane, taking the fluid-structure interaction into account. In such a strategy, the Navier-Stokes equations are solved using oomph-lib, an object-oriented, finite-element library. A special C++ computational code is developed to deal with the fluid-structure interaction problem, in which turbulence is considered through a special algorithm, based on the Baldwin-Lomax model. The proposed method is validated through comparisons with an aerodynamics benchmark and an experimental measurement of oscillating rectangular bars both available in the literature. The method is finally applied to a case study of a particular stay vane. Keywords: Hydraulic turbine. Fluid-structure interaction. Vortex-induced vibration.
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Xin, Bai. "Numerical simulation of a marine current turbine in turbulent flow." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/7900.

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The marine current turbine (MCT) is an exciting proposition for the extraction of renewable tidal and marine current power. However, the numerical prediction of the performance of the MCT is difficult due to its complex geometry, the surrounding turbulent flow and the free surface. The main purpose of this research is to develop a computational tool for the simulation of a MCT in turbulent flow and in this thesis, the author has modified a 3D Large Eddy Simulation (LES) numerical code to simulate a three blade MCT under a variety of operating conditions based on the Immersed Boundary Method (IBM) and the Conservative Level Set Method (CLS). The interaction between the solid structure and surrounding fluid is modelled by the immersed boundary method, which the author modified to handle the complex geometrical conditions. The conservative free surface (CLS) scheme was implemented in the original Cgles code to capture the free surface effect. A series of simulations of turbulent flow in an open channel with different slope conditions were conducted using the modified free surface code. Supercritical flow with Froude number up to 1.94 was simulated and a decrease of the integral constant in the law of the wall has been noticed which matches well with the experimental data. Further simulations of the marine current turbine in turbulent flow have been carried out for different operating conditions and good match with experimental data was observed for all flow conditions. The effect of waves on the performance of the turbine was also investigated and it has been noticed that this existence will increase the power performance of the turbine due to the increase of free stream velocity.
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Feilhauer, Michal. "Řešení dynamické odezvy vodohospodářských konstrukcí v interakci s kapalinou." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-355595.

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Behaviour prediction of hydraulic steel structures with the view to surrounding influences in various design dispositions is a fundamental condition for operational reliability assessment of the analyzed construction. Reliable characteristics of construction behaviour defined by the specification of its movement within changes caused by time and environmental influences is of great importance. In currently used engineering mechanics formulation it concerns setting the response of the defined construction or its part to the given time variable mechanic load. Required response values, which are necessary for evaluation terminal dispositions of capacity and usability of the construction, are trans-location and tension, or values thence derived. Calculation is basic means for response prediction of construction. The thesis presented deals with complex multi-physical behaviour problems of water supply constructions in fluid structure interaction. There are presented various approaches to calculations of static and dynamic qualities of constructions. These approaches are divided into so called “direct method”, which is based on direct connection between two physical fields and the calculation is performed by the method of final elements, and so called “indirect method” , which is based on connection of two physical fields by means of various interfaces, which are described in this thesis. In case of indirect method, the calculation of running liquid is performed by the method of final volumes and the construction calculation is performed by the method of final elements. Within the scope of this thesis, static and dynamic responses of water supply constructions have been solved with the use of the above mentioned approaches. The results of the calculations in the scope of this thesis have been compared with the findings of performed experiments. The final part of the thesis describes the results and generalized findings gathered from the tasks by various approaches.
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Book chapters on the topic "Turbine fluid-structure"

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Hemsuwan, W., K. Sakamoto, and T. Takahashi. "Longitudinal Vortex Wind Turbine: Effect of the Blade Lengths." In Fluid-Structure-Sound Interactions and Control, 117–23. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7542-1_18.

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Zheng, S., L. P. Chua, and Y. Zhao. "Simulations of Fluid-Structure Interaction of a Wind Turbine." In Fluid-Structure-Sound Interactions and Control, 407–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48868-3_65.

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Liu, Demin, Shuhong Liu, Yulin Wu, and Xiao-bing Liu. "Numerical Simulation of Hydraulic Turbine Based on Fluid-Structure Coupling." In Fluid Machinery and Fluid Mechanics, 345–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89749-1_54.

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Mollasalehi, Ehsan, Qiao Sun, and David H. Wood. "Low-Frequency Noise Propagation from a Small Wind Turbine Tower." In Fluid-Structure-Sound Interactions and Control, 271–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40371-2_40.

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Cheng, Tai Hong, and Il Kwon Oh. "Fluid-Structure Coupled Analyses of Composite Wind Turbine Blades." In Advanced Materials Research, 41–44. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-463-4.41.

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Feng, J. J., F. Z. Lin, G. K. Wu, P. C. Guo, G. J. Zhu, and X. Q. Luo. "Numerical Investigation on Performance Improvement by Using a Runner with Splitter for a Francis Turbine." In Fluid-Structure-Sound Interactions and Control, 229–34. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7542-1_34.

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Castorrini, Alessio, Alessandro Corsini, Franco Rispoli, Paolo Venturini, Kenji Takizawa, and Tayfun E. Tezduyar. "SUPG/PSPG Computational Analysis of Rain Erosion in Wind-Turbine Blades." In Advances in Computational Fluid-Structure Interaction and Flow Simulation, 77–96. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40827-9_7.

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Madapur, Amrita, Abhijeet Malge, and Prashant M. Pawar. "Fluid-Structure Interaction Analysis of Multi-Storey Vertical Axis Wind Turbine." In Techno-Societal 2018, 693–703. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16962-6_70.

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Bazilevs, Y., J. Yan, X. Deng, and A. Korobenko. "Simulating Free-Surface FSI and Fatigue Damage in Wind-Turbine Structural Systems." In Frontiers in Computational Fluid-Structure Interaction and Flow Simulation, 1–28. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96469-0_1.

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Lee, Myoungwoo, Seok-Gyu Yoon, and Youn-Jea Kim. "Stress Analysis of Wind Turbine Tower Flange Using Fluid-Structure Interaction Method." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 115–23. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-55594-8_12.

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Conference papers on the topic "Turbine fluid-structure"

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Nematbakhsh, A., D. J. Olinger, and G. Tryggvason. "A computational simulation of the motion of floating wind turbine platforms." In Fluid Structure Interaction 2011. Southampton, UK: WIT Press, 2011. http://dx.doi.org/10.2495/fsi110161.

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Saeed, R. A., A. N. Galybin, V. Popov, and N. O. Abdulrahim. "Modelling of the Francis turbine runner in power stations. Part II: stress analysis." In FLUID STRUCTURE INTERACTION 2009. Southampton, UK: WIT Press, 2009. http://dx.doi.org/10.2495/fsi090261.

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Choi, S. J., and O. T. Gudmestad. "The effect of breaking wave induced currents on an offshore wind turbine foundation." In Fluid Structure Interaction 2011. Southampton, UK: WIT Press, 2011. http://dx.doi.org/10.2495/fsi110111.

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Saeed, R. A., A. N. Galybin, and V. Popov. "FE-analysis of stresses in a Francis turbine runner at Derbendikhan power station." In FLUID STRUCTURE INTERACTION 2013. Southampton, UK: WIT Press, 2013. http://dx.doi.org/10.2495/fsi130221.

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Saeed, R. A., A. N. Galybin, V. Popov, and N. O. Abdulrahim. "Modelling of the Francis turbine runner in power stations. Part I: flow simulation study." In FLUID STRUCTURE INTERACTION 2009. Southampton, UK: WIT Press, 2009. http://dx.doi.org/10.2495/fsi090251.

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Debrabandere, F., B. Tartinville, Ch Hirsch, and G. Coussement. "Fluid-Structure Interaction Using a Modal Approach." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45692.

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A new method for Fluid-Structure Interaction (FSI) predictions is here introduced, based on a Reduced-Order Model (ROM) for the structure, described by its mode shapes and natural frequencies. A linear structure is assumed as well as Rayleigh damping. A two-way coupling between the fluid and the structure is ensured by a loosely-coupling staggered approach: the aerodynamic loads computed by the flow solver are used to determine the deformations from the modal equations, which are sent back to the flow solver. The method is firstly applied to a clamped beam oscillating under the effect of von Karman vortices. The results are compared to a full-order model. Then a flutter application is considered on the AGARD wing 445.6. Finally, the modal approach is applied to the aeroelastic behavior of an axial compressor stage. The influence of passing rotor blade wakes on the downstream stator blades is investigated.
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Reddy Gorla, Rama Subba, Shantaram S. Pai, Isaiah Blankson, Srinivas C. Tadepalli, and Sreekantha Reddy Gorla. "Unsteady Fluid Structure Interaction in a Turbine Blade." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68157.

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An unsteady, three dimensional Navier-Stokes solution in rotating frame formulation for turbomachinery applications has been described. Casting the governing equations in a rotating frame enables the freezing of grid motion and results in substantial savings in computer time. Heat transfer to a gas turbine blade was computationally simulated by finite element methods and probabilistically evaluated in view of the several uncertainties in the performance parameters. The interconnection between the CFD code and finite element structural analysis code was necessary to couple the thermal profiles with the structural design. The stresses and their variations were evaluated at critical points on the turbine blade. Cumulative distribution functions and sensitivity factors were computed for stresses due to the aerodynamic, geometric, material and thermal random variables. These results can be used to quickly identify the most critical design variables in order to optimize the design and make it cost effective. The analysis leads to the selection of the appropriate materials to be used and to the identification of both the most critical measurements and parameters.
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Payer, Florent, Pascal Ferrand, Alain Dugeai, and Fabrice Thouverez. "Comparison of Fluid-Structure Coupling Methods for Blade Forced Response Prediction." In ASME 2012 Gas Turbine India Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gtindia2012-9521.

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A time-marching coupled method has been applied to a high pressure compressor forced response case. The purpose of the study is to compare the contribution of the coupled scheme against the state of the art decoupled methodology. Although the time-marching scheme allows for a stronger coupling between the motion and aerodynamic field, results have shown good agreement with the decoupled method. The additional computing cost arising from the long transient state and the small difference in amplitude prediction with the decoupled scheme reduce the interest for the coupled one. A new transient state method is proposed to combine both coupled and decoupled schemes features. Here, the forcing and damping functions are extracted during the mechanical transient state of the coupled simulation and forced response is calculated as in the decoupled method. Results have shown good agreements with the experiment and all the methods are compared in terms of underlying assumptions and performances.
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Shen, Xiuli, Shaojing Dong, and Xiaodong Qi. "The Fluid-Thermal-Structure Coupled Analysis and Optimization of Turbine Mortise/Disc." In ASME 2012 Gas Turbine India Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gtindia2012-9551.

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In the design of modern engine, high thrust-weight ratio becomes an important indicator. In these engines, the turbine disc bears complicated loads caused by high rotating speed and high temperature difference. Reducing its thermal stress by fine-tuning the shape and temperature field without changing the revolving speed so as to achieve weight loss has become the new focus. Based on the structure of the turbine disc, this paper discussed multi-disciplinary optimization method. Firstly, we studied the fluid-thermal coupled numerical method of the turbine disc. The temperature field on solid domain of the turbine disc is obtained without changing the air-entraining. And then, we accomplished the data transmission of temperature between fluid-thermal coupled calculation and strength calculation by interpolation process accurately. The strength calculation is carried out with the temperature as the boundary condition of the solid domain. Secondly, based on the feature-based parametric model of the mortise/disc structure, the fluid and strength calculation software are integrated to the optimization platform. It is through batch and convergence programs to achieve the automated operation of multi-disciplinary calculation. Take the lightest weight as the objective function and the weight-sensitive parameters as design variables. The fluid-thermal-structure coupled optimization of mortise/disc is achieved by using the classic multi-disciplinary feasible optimization strategy. To take full advantage of the optimization space to find the optimal solution of design problems, we have taken hybrid algorithms of MIGA and NLPQL. Finally, on the basis of the above calculations and optimization, a satisfactory result is obtained with the total weight of the mortise/disc decreased by about 5%. The plastic analysis of the optimized mortise/disc is carried out at last and met the strength requirements. Through this paper, a complete multi-disciplinary method containing fluid-thermal-structure of the mortise/disc is formed. The method takes full account of the influence of the fluid flow and heat transfer. It also shortens the design cycle and promotes design efficiency.
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Yan, Ronglei, Zhenlei Chen, Chang Liu, Fengyuan Yang, and Yi Hu. "Stress Analysis of Turbocharger Turbine based on Fluid-Structure Coupling." In ICCMS 2022: 2022 the 14th International Conference on Computer Modeling and Simulation. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3547578.3547595.

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Reports on the topic "Turbine fluid-structure"

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Alonso, Juan J., and Gianluca Iaccarino. Large-Scale Uncertainty and Error Analysis for Time-dependent Fluid/Structure Interactions in Wind Turbine Applications. Office of Scientific and Technical Information (OSTI), August 2013. http://dx.doi.org/10.2172/1163731.

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