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Статті в журналах з теми "Lagrangian Dynamic Smagorinsky model"
Efstathiou, G. A., R. S. Plant, and M. J. M. Bopape. "Simulation of an Evolving Convective Boundary Layer Using a Scale-Dependent Dynamic Smagorinsky Model at Near-Gray-Zone Resolutions." Journal of Applied Meteorology and Climatology 57, no. 9 (September 2018): 2197–214. http://dx.doi.org/10.1175/jamc-d-17-0318.1.
Повний текст джерелаKirkil, Gokhan, Jeff Mirocha, Elie Bou-Zeid, Fotini Katopodes Chow, and Branko Kosović. "Implementation and Evaluation of Dynamic Subfilter-Scale Stress Models for Large-Eddy Simulation Using WRF*." Monthly Weather Review 140, no. 1 (January 1, 2012): 266–84. http://dx.doi.org/10.1175/mwr-d-11-00037.1.
Повний текст джерелаIIZUKA, Satoru, Shuzo MURAKAMI, Akashi MOCHIDA, Yoshihide TOMINAGA, Hikaru KOBAYASHI, and Squires K. D. "PERFORMANCE OF LAGRANGIAN DYNAMIC SMAGORINSKY MODEL : Large eddy simulation of turbulent flow past 2D square cylinder using dynamic SGS model (Part 3)." Journal of Architecture and Planning (Transactions of AIJ) 63, no. 511 (1998): 39–43. http://dx.doi.org/10.3130/aija.63.39_5.
Повний текст джерелаPitchurov, George, Christof Gromke, Jordan A. Denev, and Flavio Cesar Cunha Galeazzo. "Validation study for Large-Eddy Simulation of Forest Flow." E3S Web of Conferences 207 (2020): 02010. http://dx.doi.org/10.1051/e3sconf/202020702010.
Повний текст джерелаRismondo, Giacomo, Marta Cianferra, and Vincenzo Armenio. "Acoustic Response of a Vibrating Elongated Cylinder in a Hydrodynamic Turbulent Flow." Journal of Marine Science and Engineering 10, no. 12 (December 6, 2022): 1918. http://dx.doi.org/10.3390/jmse10121918.
Повний текст джерелаScotti, A., C. Meneveau, and M. Fatica. "Dynamic Smagorinsky model on anisotropic grids." Physics of Fluids 9, no. 6 (June 1997): 1856–58. http://dx.doi.org/10.1063/1.869306.
Повний текст джерелаKhani, Sina, and Michael L. Waite. "Large eddy simulations of stratified turbulence: the dynamic Smagorinsky model." Journal of Fluid Mechanics 773 (May 21, 2015): 327–44. http://dx.doi.org/10.1017/jfm.2015.249.
Повний текст джерелаSchaefer-Rolffs, Urs, and Erich Becker. "Horizontal Momentum Diffusion in GCMs Using the Dynamic Smagorinsky Model." Monthly Weather Review 141, no. 3 (March 1, 2013): 887–99. http://dx.doi.org/10.1175/mwr-d-12-00101.1.
Повний текст джерелаSchaefer-Rolffs, Urs. "A generalized formulation of the dynamic Smagorinsky model." Meteorologische Zeitschrift 26, no. 2 (April 25, 2017): 181–87. http://dx.doi.org/10.1127/metz/2016/0801.
Повний текст джерелаWang, T., G. Tao, J. S. Bai, P. Li, and B. Wang. "Numerical comparative analysis of Richtmyer–Meshkov instability simulated by different SGS models." Canadian Journal of Physics 93, no. 5 (May 2015): 519–25. http://dx.doi.org/10.1139/cjp-2014-0099.
Повний текст джерелаДисертації з теми "Lagrangian Dynamic Smagorinsky model"
Foroozani, Najmeh. "Numerical Study of Turbulent Rayleigh-Benard Convection with Cubic confinement." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11115.
Повний текст джерелаTurbulent Rayleigh-Bénard convection (RBC) occurs when a shallow layer of fluid is heated from below. It is a challenging subject in non-linear physics, with many important applications in natural and engineering systems. Because of the complexity of the governing equations, analytical progress in understanding convection has been slow, and laboratory experiments and numerical simulations have assumed increased importance. In regard to numerical work, Large-Eddy Simulation (LES) techniques have proved to be reliable and powerful tool to understand the physics since it provides better coverage for measurements, that are not as easily obtained in physical experiments or the other numerical approaches. This thesis addresses different aspects of Rayleigh-Bénard convection in fully developed turbulent regime through Large Eddy Simulation (LES) to shed light on some important aspect of the geometrical shape of the convection cell. The layout of the thesis is as follows: In Chapter 1, we first introduce Rayleigh-Bénard convection and the equations and parameters that govern it. This is followed by a discussion on different types of boundary conditions used in numerical and theoretical studies of RBC. Subsequently we present various convection states that are observed analytically and experimentally in RBC as a function of Ra and Ʈ. To this end we present a brief survey of the analytical, experimental and numerical works on confined thermal convection. We introduce different regimes and related scaling according to Grossman and Lohse theory. We also present the experimental and numerical results related to the Large Scale Circulation (LSC) within different geometries. In Chapter 2, we present the details of the numerical methods used to solve the governing non-linear equations . In the second part, we provide the details of the solver and the algorithm used to solve the RBC dynamical equations in a Cartesian geometry together with boundary conditions. In Chapter 3, we demonstrate that our numerical method and solver give results consistent with earlier numerical results. Results from the Direct Numerical Simulations (DNS) and Large Eddy Simulation (LES) with constant and dynamic subgrid scale Prandtl number (P_sgs) are presented and compared. We observe close agreement with Lagrangian dynamic approaches. In the first part of Chapter 4 we analyse the local fluctuations of turbulent Rayleigh-Bénard convection in a cubic confinement with aspect ratio one for Prandtl number Pr = 0.7 and Rayleigh numbers (Ra) up to 10^9 by means of LES methodology on coarse grids. Our results reveal that the scaling of the root-mean-square density and velocity fluctuations measured in the cell center are in excellent agreement with the unexpected scaling measured in the laboratory experiments of Daya and Ecke (2001) in their square cross-section cell. Moreover we find that the time-averaged spatial distributions of density fluctuations show a fixed inhomogeneity that maintains its own structure when the flow switches from one diagonal to the other. The largest level of rms density fluctuations corresponds to the diagonal opposite that of the Large Scale Circulation (LSC) where we observed strong counter-rotating vortex structures. In the second part we extended our simulations and Ra up to 1011, in order to identify the time periods in which the orientation of LSC is constant. Surprisingly we find that the LSC switches stochastically from one diagonal to the other. In Chapter 5, we study the effect of 3D-roughness on scaling of Nu(Ra) and consequently on the fluctuations of density. Moreover we present the effect of roughness shape when the tip has a wide angle and the other one is smooth. We study two types of elements, one of which is a pyramid and the other is a sinusoidal function spread over the bottom (heated) and top (cooled) plates, in a cubic confinement. However preliminary results suggest that the effect of roughness appears evident at high Ra numbers when the thermal boundary layer is thin enough to shape around the obstacles.
XXVI Ciclo
1983
Abrahamowicz, Maria Izabela. "A thermodynamic and dynamic Lagrangian model for icebergs: a data-model intercomparison for the Southern Ocean." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18677.
Повний текст джерелаUn modèle Lagrangien dynamique-thermodynamique pour la dérive d'icebergs a été développé, codé et validé à l'aide d'observations. Premièrement, nous avons produit, à l'aide du modèle, une climatologie (1979-2000) de la dérive d'icebergs dans l'Océan du Sud. Les principales tendances du mouvement des icebergs simulés sont en accord avec les observations satellitaires et les mesures in-situ. Le modèle simule bien la limite septentrionale des icebergs d'Antarctique. Nous avons ensuite simulé vingt-neuf trajectoires individuelles d'icebergs géants. C'est la première fois qu'une telle étude est menée pour des icebergs observés autour de l'Antarctique et sur une échelle de plusieurs années. Dans douze cas, le tracé et le minutage de la trajectoire observée a été reproduit avec succès (erreur de 0.9-50%). Six simulations avaient des erreurs de temps mais non de trajet et dans les onze simulations restantes, l'iceberg a dérivé dans la mauvaise direction. Il a été établi que l'erreur du modèle était indépendante de la durée de la simulation, suggérant que l'erreur était due au champ de forçage plutôt qu'aux équations physiques du modèle. En particulier, une détérioration de la qualité des résultats a été observée dans les régions côtières et dans les parties sud des mers de Ross et de Weddell; soulignant ainsi le besoin d'améliorer le champ de forçage dans ces régions. D'autres moyens d'augmenter la précision du modèle seraient, entre autre, une meilleure définition de la géographie côtière de l'Antarctique, une meilleure représentation des vents catabatiques et un modèle océanique incluant une composante de glace dynamique et thermodynamique.
Gonc, L. Oktay. "Computation Of External Flow Around Rotating Bodies." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605985/index.pdf.
Повний текст джерелаs upwind flux differencing scheme for spatial and Runge-Kutta explicit multistage time stepping scheme for temporal discretization on unstructured meshes is developed for the unsteady solution of external viscous flow around rotating bodies. The main aim of this study is to evaluate the aerodynamic dynamic stability derivative coefficients for rotating missile configurations. Arbitrary Lagrangian Eulerian (ALE) formulation is adapted to the solver for the simulation of the rotation of the body. Eigenvalues of the Euler equations in ALE form has been derived. Body rotation is simply performed by rotating the entire computational domain including the body of the projectile by means of rotation matrices. Spalart-Allmaras one-euqation turbulence model is implemented to the solver. The solver developed is first verified in 3-D for inviscid flow over two missile configurations. Then inviscid flow over a rotating missile is tested. Viscous flux computation algorithms and Spalarat-Allmaras turbulence model implementation are validated in 2-D by performing calculations for viscous flow over flat plate, NACA0012 airfoil and NLR 7301 airfoil with trailing edge flap. The ALE formulation is validated in 2-D on a rapidly pitching NACA0012 airfoil. Afterwards three-dimensional validation studies for viscous, laminar and turbulent flow calculations are performed on 3-D flat plate problem. At last, as a validation test case, unsteady laminar and turbulent viscous flow calculations over a spinning M910 projectile configuration are performed. Results are qualitatively in agreement with the analytical solutions, experimental measurements and previous studies for steady and unsteady flow calculations.
Shehadeh, Mhd Ali. "Geometrické řízení hadům podobných robotů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417115.
Повний текст джерелаZinszner, Jean-Luc. "Identification des paramètres matériau gouvernant les performances de céramiques à blindage." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0337/document.
Повний текст джерелаSince the sixties, ceramics are commonly used as armour materials. Indeed, thanks to their interesting physical and mechanical properties, they allow a significant weight benefit in comparison to monolithic steel plate armours. However, the microstructure of the ceramic may have a strong influence on its penetration resistance. Based on characterisation tests and on the use of four silicon carbide grades, this work aims to highlight the links between the microstructure and the ballistic efficiency. Experimental compressive and spalling tests are based on the use of the GEPI device. For studying the compressive dynamic behaviour, it allows using the lagrangian analysis method and characterising the yield strength of the material. For studying the tensile dynamic behaviour, it allows assessing the strain-rate sensitivity of the spall strength. An analysis of the fragmentation process is performed based on Edge-On Impact tests. Moreover, an innovating impact test on fragmented ceramics has been designed and performed. The different experimental results allow a better understanding of the influence of the ceramic microstructure on its behaviour under the different loadings. All the experimental data have been compared to numerical results allowing validating the constitutive models. The DFH (Denoual-Forquin-Hild) damage model of brittle materials showed very good capacities to simulate the tensile dynamic behaviour of ceramics (spalling and fragmentation)
Wadhwani, Rahul. "Physics-based simulation of short-range spotting in wildfires." Thesis, 2019. https://vuir.vu.edu.au/40025/.
Повний текст джерелаКниги з теми "Lagrangian Dynamic Smagorinsky model"
Koh, Hyun M. A mixed Eulerian-Lagrangian model for the analysis of dynamic fracture. Urbana, IL: University of Illinois at Urbana-Champaign, 1986.
Знайти повний текст джерелаCole, Harold L. Monetary and Fiscal Policy through a DSGE Lens. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190076030.001.0001.
Повний текст джерелаЧастини книг з теми "Lagrangian Dynamic Smagorinsky model"
Meneveau, Charles, Fernando Porté-Agel, and Marc B. Parlange. "Accounting for Scale-Dependence in the Dynamic Smagorinsky Model." In Recent Advances in DNS and LES, 317–28. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4513-8_27.
Повний текст джерелаDe Stefano, Giuliano, Daniel E. Goldstein, Oleg V. Vasilyev, and Nicholas K. R. Kevlahan. "Towards Lagrangian dynamic SGS model for SCALES of isotropic turbulence." In Direct and Large-Eddy Simulation VI, 175–82. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/978-1-4020-5152-2_20.
Повний текст джерелаEl Hraiech, Safa, Ajmi Houidi, Zouhaier Affi, and Lotfi Romdhane. "Reduced Inverse Dynamic Model of Parallel Manipulators Based on the Lagrangian Formalism." In Design and Modeling of Mechanical Systems - II, 479–87. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17527-0_48.
Повний текст джерелаAzar, Ahmad Taher, Fernando E. Serrano, Nashwa Ahmad Kamal, Anis Koubaa, Adel Ammar, Amjad J. Humaidi, and Ibraheem Kasim Ibraheem. "Lagrangian Dynamic Model Derivation and Energy Shaping Control of Non-holonomic Unmanned Aerial Vehicles." In Proceedings of the International Conference on Artificial Intelligence and Computer Vision (AICV2021), 483–93. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76346-6_44.
Повний текст джерелаThiry, O., G. Winckelmans, and M. Duponcheel. "The Dynamic Smagorinsky Model in $$512^{3}$$ Pseudo-Spectral LES of Decaying Homogeneous Isotropic Turbulence at Very High $$Re_\lambda $$." In Direct and Large-Eddy Simulation XI, 123–28. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04915-7_17.
Повний текст джерелаKoo, Bonyoung, and Spyros N. Pandis. "Evaluation of the Equilibrium, Dynamic, and Hybrid Aerosol Modeling Approaches in a One-Dimensional Lagrangian Trajectory Model." In Air Pollution Modelling and Simulation, 289–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04956-3_28.
Повний текст джерела"Challenges for Diadromous Fishes in a Dynamic Global Environment." In Challenges for Diadromous Fishes in a Dynamic Global Environment, edited by Donald J. Jellyman and Melissa M. Bowen. American Fisheries Society, 2009. http://dx.doi.org/10.47886/9781934874080.ch17.
Повний текст джерелаZou, Dehua, Zhipeng Jiang, Minmin Qiao, Lanlan Liu, Wei Jiang, and Qianwei Yi. "Analysis and Simulation of Dynamic Characteristics for Multi-Split Transmission Line Splicing Pipe Flaw Detection Robot." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220494.
Повний текст джерелаLiu, Xu, Nan Gui, Mengqi Wu, Takashi Hibiki, Xingtuan Yang, Jiyuan Tu, and Shengyao Jiang. "DEFEM Method and Its Application in Pebble Flows." In Finite Element Method and Its Extensions [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109347.
Повний текст джерелаТези доповідей конференцій з теми "Lagrangian Dynamic Smagorinsky model"
Tran, Steven A., and Onkar Sahni. "Large Eddy Simulation based on the Residual-based Variational Multiscale Method and Lagrangian Dynamic Smagorinsky Model." In 54th AIAA Aerospace Sciences Meeting. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-0341.
Повний текст джерелаBou-Zeid, Elie, Charles Meneveau, and Marc B. Parlange. "Applications of the Lagrangian Dynamic Model in LES of Turbulent Flow Over Surfaces With Heterogeneous Roughness Distributions." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56127.
Повний текст джерелаBou-Zeid, Elie, Charles Meneveau, and Marc B. Parlange. "Comparison of Four Eddy-Viscosity SGS Models in Large-Eddy Simulation of Flows Over Rough Walls." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56126.
Повний текст джерелаMangani, Luca, David Roos Launchbury, Ernesto Casartelli, and Giulio Romanelli. "Development of High Order LES Solver for Heat Transfer Applications Based on the Open Source OpenFOAM Framework." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43279.
Повний текст джерелаGharakhani, Adrin. "A Grid-Free Method for LES of Incompressible Flow." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31370.
Повний текст джерелаRousta, Farid, Bamdad Lessani, and Goodarz Ahmadi. "A Numerical Study on the Effect of Carrier Fluid Subgrid Scales Fluctuations on Deposition and Dispersion of Lagrangian Particles." In ASME 2022 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/fedsm2022-87651.
Повний текст джерелаElasrag, Hossam, and Shaoping Li. "Investigation of Extinction and Reignition Events Using the Flamelet Generated Manifold Model." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75420.
Повний текст джерелаBerland, Julien, Enrico Deri, and André Adobes. "A Numerical Investigation of the Fluidelastic Coupling for a Cell of Flexible Tubes in a Square-in-Line Bundle Subject to Water Cross-Flow." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45097.
Повний текст джерелаYang, Fan, Yulin Wu, and Shuhong Liu. "A Lattice Boltzmann Dynamic Subgrid Model for Lid-Driven Cavity Flow." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56100.
Повний текст джерелаBogey, Christophe, and Christophe Bailly. "LARGE EDDY SIMULATIONS OF ROUND FREE JETS USING EXPLICIT FILTERING WITH/WITHOUT DYNAMIC SMAGORINSKY MODEL." In Fourth International Symposium on Turbulence and Shear Flow Phenomena. Connecticut: Begellhouse, 2005. http://dx.doi.org/10.1615/tsfp4.1370.
Повний текст джерела