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Artigos de revistas sobre o tema "Thermo-fluid dynamics"

Autor: Grafiati

Publicado: 8 de março de 2025

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1

Yamagami, Shigemasa, Tetta Hashimoto e Koichi Inoue. "OS23-6 Thermo-Fluid Dynamics of Pulsating Heat Pipes for LED Lightings(Thermo-fluid dynamics(2),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 283. http://dx.doi.org/10.1299/jsmeatem.2015.14.283.

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2

Ushida, Akiomi, Shuichi Ogawa, Tomiichi Hasegawa e Takatsune Narumi. "OS23-1 Pseudo-Laminarization of Dilute Polymer Solutions in Capillary Flows(Thermo-fluid dynamics(1),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 278. http://dx.doi.org/10.1299/jsmeatem.2015.14.278.

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3

Nagura, Ryo, Kanji Kawashima, Kentaro Doi e Satoyuki Kawano. "OS23-3 Observation of Electrically Induced Flows in Highly Polarized Electrolyte Solution(Thermo-fluid dynamics(1),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 280. http://dx.doi.org/10.1299/jsmeatem.2015.14.280.

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YANAGISAWA, Shota, Masaru OGASAWARA, Takahiro ITO, Yoshiyuki TSUJI, Seiji YAMASHITA, Takashi BESSHO e Manabu ORIHASHI. "OS23-11 The Mechanism of Enhancing Pool Boiling Efficiency by Changing Surface Property(Thermo-fluid dynamics(3),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 288. http://dx.doi.org/10.1299/jsmeatem.2015.14.288.

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5

Yamaguchi, Yukio, e Kenji Amagai. "OS23-7 Development of Binary Refrigeration System Using CO2 Coolant for Freezing Show Case(Thermo-fluid dynamics(2),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 284. http://dx.doi.org/10.1299/jsmeatem.2015.14.284.

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6

Aoshima, Yuki, e Hiroaki Hasegawa. "OS23-2 The Behavior of a Non-Circular Synthetic Jet Issued into a Turbulent Boundary Layer(Thermo-fluid dynamics(1),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 279. http://dx.doi.org/10.1299/jsmeatem.2015.14.279.

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7

Shakouchi, Toshihiko, Ryosuke Ozawa, Fumi Iwasaki, Koichi Tsujimoto e Toshitake Ando. "OS23-5 Flow and Heat Transfer of Petal Shaped Double Tube : Water and Air-Water Bubbly Flows(Thermo-fluid dynamics(2),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 282. http://dx.doi.org/10.1299/jsmeatem.2015.14.282.

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8

Suzuki, Takashi, Toyoki Fukuda, Akihiko Mitsuishi e Kenzo Kitamura. "OS23-9 An Experimental Investigation of The Surface-smoothness Effects upon Evaporation of Droplet on Heated Surface(Thermo-fluid dynamics(3),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 286. http://dx.doi.org/10.1299/jsmeatem.2015.14.286.

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9

Mizushima, Yuki, e Takayuki Saito. "OS23-10 Time-resolved visualization for bubble nucleation induced by femtosecond pulse laser in water and acetone(Thermo-fluid dynamics(3),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 287. http://dx.doi.org/10.1299/jsmeatem.2015.14.287.

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10

Kataoka, Yoji, Tetsuro Tsuji e Satoyuki Kawano. "OS23-8 A Microfluidic Device for Visualization of Thermophoresis Using In-plane Two Adjacent Plates at Different Temperatures(Thermo-fluid dynamics(2),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 285. http://dx.doi.org/10.1299/jsmeatem.2015.14.285.

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11

Mitsuishi, Akihiko, Kenzo Kitamura e Takashi Suzuki. "OS23-4 Effect of Aspect Ratios on the Fluid Flow and Heat Transfer of Natural Convection over Upward-Facing, Horizontal Heated Plates(Thermo-fluid dynamics(1),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 281. http://dx.doi.org/10.1299/jsmeatem.2015.14.281.

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12

Carlomagno, G. M., F. G. Nese, G. Cardone e T. Astarita. "Thermo-fluid-dynamics of a complex fluid flow". Infrared Physics & Technology 46, n.º 1-2 (dezembro de 2004): 31–39. http://dx.doi.org/10.1016/j.infrared.2004.03.005.

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13

Ha, Man-Yeong. "Large Scale Computational Thermo-Fluid Dynamics Lab." Journal of the Korean Society of Visualization 6, n.º 1 (30 de junho de 2008): 19–26. http://dx.doi.org/10.5407/jksv.2008.6.1.019.

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14

Reddy Kukutla, Pol, e BVSSS Prasad. "Network analysis of a coolant flow performance for the combined impingement and film cooled first-stage of high pressure gas turbine nozzle guide vane". Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, n.º 6 (16 de abril de 2018): 1977–89. http://dx.doi.org/10.1177/0954410018767290.

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The present paper describes a system-level thermo-fluid network analysis for the secondary air system analysis of a typically film-cooled nozzle guide vane with multiple actions of jet impingement. The one-dimensional simulation was done with the help of the commercially available Flownex 2015 software. The system-level thermo-fluid network results were validated with both the computational fluid dynamics results and experimentally available literature. The entire nozzle guide vane geometry was first mapped to a thermo-fluid network model and the pressure conditions at different nodes. The discharge and heat transfer coefficients obtained from the Ansys FLUENT were specified as inputs to the thermo-fluid network model. The results show that the one-dimensional simulation of the coolant mass flow rates and jet Nusselt number values are in good agreement with the three-dimensional computational fluid dynamics results.

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15

Shukla, K. N. "Thermo-fluid dynamics of Loop Heat Pipe operation". International Communications in Heat and Mass Transfer 35, n.º 8 (outubro de 2008): 916–20. http://dx.doi.org/10.1016/j.icheatmasstransfer.2008.04.020.

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Pozzi, Amilcare, e Renato Tognaccini. "Thermo-fluid dynamics of the unsteady channel flow". European Journal of Mechanics - B/Fluids 28, n.º 2 (março de 2009): 299–308. http://dx.doi.org/10.1016/j.euromechflu.2008.05.006.

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17

Luo, Xuwei, Xiaochun Zeng, Pingping Zou, Yuxing Lin, Tao Wei, Xiaojun Yuan e Shanbin Liao. "A finite element analysis-computational fluid dynamics coupled analysis on thermal-mechanical fatigue of cylinder head of a turbo-charged diesel engine". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, n.º 6 (6 de dezembro de 2019): 1634–43. http://dx.doi.org/10.1177/0954407019890481.

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A finite element analysis-computational fluid dynamics coupled analysis on the thermo-mechanical fatigue of cylinder head of a turbo-charged diesel engine was performed, and the complete simulation process is illustrated in this paper. In-cylinder combustion analysis and water jacket coolant flow analysis were conducted to provide heat transfer boundary conditions to the temperature field calculation of the cylinder head. Comparing with the conventional finite element analysis of cylinder head by which the heat transfer boundary conditions of the combustion and coolant sides are estimated, the present method coupled the three-dimensional combustion computational fluid dynamics and coolant computational fluid dynamics with the finite element analysis. Both computational fluid dynamics and finite element analysis obtain more accurate boundary conditions on their interface from each other, and thus, the present method improves accuracy of thermo-mechanical fatigue prediction. Based on the measured material performance parameters such as stress–strain curve under different temperatures and E–N curve, creep, and oxidation data material performance, the cylinder head–gasket–cylinder block finite element transient stress–strain field was calculated using ABAQUS. The thermo-mechanical fatigue analysis of cylinder head submodel was performed by using FEMFAT software that is based on the Sehitoglu model to predict the thermo-mechanical fatigue life of cylinder head. By comparing the measured and predicted temperatures of cylinder head, the temperature results showed a good agreement, and the error is less than 10%.

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18

Carlomagno, Giovanni Maria, e Carosena Meola. "Infrared thermography in materials inspection and thermo-fluid dynamics". International Journal of Computational Methods and Experimental Measurements 1, n.º 2 (31 de janeiro de 2013): 173–98. http://dx.doi.org/10.2495/cmem-v1-n2-173-198.

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19

Olcese, Marco, e Federico Barbano. "Thermo-fluid dynamics analysis of ITER Cryostat Space Room". Fusion Engineering and Design 135 (outubro de 2018): 183–95. http://dx.doi.org/10.1016/j.fusengdes.2018.06.025.

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20

Kuan, Chih-Kuang, Jaeheon Sim e Wei Shyy. "Adaptive thermo-fluid moving boundary computations for interfacial dynamics". Acta Mechanica Sinica 28, n.º 4 (agosto de 2012): 999–1021. http://dx.doi.org/10.1007/s10409-012-0126-3.

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21

Pozzi, A., A. Bianchini e A. R. Teodori. "Some new test cases in compressible thermo-fluid-dynamics". International Journal of Heat and Fluid Flow 14, n.º 2 (junho de 1993): 201–5. http://dx.doi.org/10.1016/0142-727x(93)90029-m.

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22

Iasiello, M., W. K. S. Chiu, A. Andreozzi, N. Bianco e V. Naso. "Functionally-graded foams for volumetric solar receivers". Journal of Physics: Conference Series 2177, n.º 1 (1 de abril de 2022): 012030. http://dx.doi.org/10.1088/1742-6596/2177/1/012030.

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Abstract The open volumetric receiver, one of the most important components of a Concentrated Solar Power (CSP) plant, is made up by a ceramic foam on which the concentrated solar radiation impinges. Ceramic foams are employed in volumetric solar receivers because of their high specific surfaces and their operating temperatures higher than those of metal foams. Thermo- fluid-dynamics in the graded ceramic foam of a volumetric solar air receiver for concentrated solar power is investigated numerically. Variable porosities and Pores Per Inch (PPI), according to different power laws, are accounted for. Governing equations are written with the Volume Averaging Technique (VAT) and are solved with the commercial software Comsol Multiphysics. The effects of different porosity and PPI laws, on the fluid velocity, pressure drop and temperatures, under different thermo-fluid-dynamic conditions, are highlighted.

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23

Lee, Seungjin, Yoon Kim e Joong Park. "Numerical Investigation on the Effects of Baffles with Various Thermal and Geometrical Conditions on Thermo-Fluid Dynamics and Kinetic Power of a Solar Updraft Tower". Energies 11, n.º 9 (25 de agosto de 2018): 2230. http://dx.doi.org/10.3390/en11092230.

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Solar updraft towers (SUTs) are used for renewable power generation, taking advantage of the thermal updraft air flow caused by solar energy. Aerodynamic devices have been applied to SUTs to improve their performance and the baffle is one such device. Here, we investigate the effect of baffle installation on the thermo-fluid dynamic phenomena in the collector of an SUT and how it enhances the overall SUT performance using computational fluid dynamics analysis. Two geometric parameters (height and width of baffle) and two thermal boundary conditions of the baffle (adiabatic condition and heat flux condition) were tested through simulations with 10 different models. The vortex generated by the baffle has a positive effect on the delivery of heat energy from the ground to the main flow; however, one disadvantage is that the baffle inherently increases the resistance of the main flow. Over 3% higher kinetic power was achieved with some of the simulated baffle models. Therefore, an optimum design for baffle installation can be achieved by considering the positive and negative thermo-fluid dynamics of baffles.

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24

Obiso, D., D. H. Schwitalla, I. Korobeinikov, B. Meyer, M. Reuter e A. Richter. "Dynamics of Rising Bubbles in a Quiescent Slag Bath with Varying Thermo-Physical Properties". Metallurgical and Materials Transactions B 51, n.º 6 (21 de setembro de 2020): 2843–61. http://dx.doi.org/10.1007/s11663-020-01947-0.

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AbstractThe motion of bubbles in a liquid slag bath with temperature gradients is investigated by means of 3D fluid dynamic computations. The goal of the work is to describe the dynamics of the rising bubbles, taking into account the temperature dependency of the thermo-physical properties of the slag. Attention is paid to the modeling approach used for the slag properties and how this affects the simulation of the bubble motion. In particular, the usage of constant values is compared to the usage of temperature-dependent data, taken from models available in the literature and from in-house experimental measurements. Although the present study focuses on temperature gradients, the consideration of varying thermo-physical properties is greatly relevant for the fluid dynamic modeling of reactive slag baths, since the same effect is given by heterogeneous species and solid fraction distributions. CFD is applied to evaluate the bubble dynamics in terms of the rising path, terminal bubble shape, and velocity, the gas–liquid interface area, and the appearance of break-up phenomena. It is shown that the presence of a thermal gradient strongly acts on the gas–liquid interaction when the temperature-dependent properties are considered. Furthermore, the use of literature models and experimental data produces different results, demonstrating the importance of correctly modeling the slag’s thermo-physical properties.

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25

Tito, Elizabeth P., e Vadim I. Pavlov. "Dynamics of Vortex Structures: From Planets to Black Hole Accretion Disks". Dynamics 4, n.º 2 (13 de maio de 2024): 357–93. http://dx.doi.org/10.3390/dynamics4020021.

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Thermo-vortices (bright spots, blobs, swirls) in cosmic fluids (planetary atmospheres, or even black hole accretion disks) are sometimes observed as clustered into quasi-symmetrical quasi-stationary groups but conceptualized in models as autonomous items. We demonstrate—using the (analytical) Sharp Boundaries Evolution Method and a generic model of a thermo-vorticial field in a rotating “thin” fluid layer in a spacetime that may be curved or flat—that these thermo-vortices may be not independent but represent interlinked parts of a single, coherent, multi-petal macro-structure. This alternative conceptualization may influence the designs of numerical models and image-reconstruction methods.

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26

YAMAGAMI, Shigemasa, Koichi INOUE e Sadami YOSHIYAMA. "Thermo-fluid dynamics of pulsating heat pipes for LED lightings". Mechanical Engineering Journal 3, n.º 6 (2016): 16–00160. http://dx.doi.org/10.1299/mej.16-00160.

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Matsumoto, Yoichiro. "Molecular Dynamics Method and Its Application on Thermo-fluid Flows". Journal of the Society of Mechanical Engineers 97, n.º 907 (1994): 472–75. http://dx.doi.org/10.1299/jsmemag.97.907_472.

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Grassi, Walter, e Daniele Testi. "Quantitative measurements in thermo-fluid dynamics based on colour processing". Optics & Laser Technology 43, n.º 2 (março de 2011): 381–93. http://dx.doi.org/10.1016/j.optlastec.2009.09.007.

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Bayley, F. J., C. A. Long e A. B. Turner. "Discs and Drums: The Thermo-Fluid Dynamics of Rotating Surfaces". Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 207, n.º 2 (março de 1993): 73–81. http://dx.doi.org/10.1243/pime_proc_1993_207_103_02.

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This paper reviews long-term experimental and theoretical research programmes concerned with flow and heat transfer over the large rotating surfaces, commonly discs, often drums but sometimes conical, used to support the blades in turbomachinery. The account begins with a geometry found in turbomachinery from the oldest steam plant to the most modern gas turbine, in which a disc rotates near to a stationary, usually coaxial, member. The flow in the intervening ‘wheel-space’ is well understood, but external conditions can affect the extent and nature of ingress from the surrounding fluid. In the gas turbine this fluid is the mainstream hot gas, an inflow of which could have serious consequences, so that the study of ingress has become the principal subject of research for rotor-stator systems and recent work is fully reported here. In many turbo-machines, especially compressors, adjacent coaxial surfaces rotate together and thus enclose a cavity subject to unusual forces in which a wide range of flow regimes can obtain. The precise form depends largely on whether the cavity allows a net radial inflow or outflow of fluid or whether the only access and egress are from near the axis of the system, the so-called ‘axial through-flow’ case. Systems with a net radial flow, inward or outward, are well understood. In their absence, the flows are often four dimensional, varying with time and in the three space coordinates. Such regimes remain incompletely understood although recent congruence between experimental and theoretical studies is encouraging. Finally, attention is turned to surfaces nearer parallel than orthogonal to the axis of rotation, as in the drums used in older steam turbines and commonly in compressors. Here the main concern has been with the effect of stationary blading, where the close clearance between the blading and the rotating surface modifies the boundary layers and thus the friction and heat transfer on the latter.

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Battaglia, Valerio, Michele De Santis, Vincenzo Volponi e Maurizio Zanforlin. "Steel Thermo-Fluid-Dynamics at Tundish Drainage and Quality Features". steel research international 84, n.º 3 (5 de outubro de 2012): 237–45. http://dx.doi.org/10.1002/srin.201200123.

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31

Wang, Jihong, Tengfei (Tim) Zhang, Hongbiao Zhou e Shugang Wang. "Inverse design of aircraft cabin environment using computational fluid dynamics-based proper orthogonal decomposition method". Indoor and Built Environment 27, n.º 10 (6 de julho de 2017): 1379–91. http://dx.doi.org/10.1177/1420326x17718053.

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To design a comfortable aircraft cabin environment, designers conventionally follow an iterative guess-and-correction procedure to determine the air-supply parameters. The conventional method has an extremely low efficiency but does not guarantee an optimal design. This investigation proposed an inverse design method based on a proper orthogonal decomposition of the thermo-flow data provided by full computational fluid dynamics simulations. The orthogonal spatial modes of the thermo-flow fields and corresponding coefficients were firstly extracted. Then, a thermo-flow field was expressed into a linear combination of the spatial modes with their coefficients. The coefficients for each spatial mode are functions of air-supply parameters, which can be interpolated. With a quick map of the cause–effect relationship between the air-supply parameters and the exhibited thermo-flow fields, the optimal air-supply parameters were determined from specific design targets. By setting the percentage of dissatisfied and the predicted mean vote as design targets, the proposed method was implemented for inverse determination of air-supply parameters in two aircraft cabins. The results show that the inverse design using computational fluid dynamics-based proper orthogonal decomposition method is viable. Most of computing time lies in the construction of data samples of thermo-flow fields, while the proper orthogonal decomposition analysis and data interpolation is efficient.

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32

El Hassan, Mouhammad. "Numerical Characterization of the Flow Dynamics and COP Estimation of a Binary Fluid Ejector Ground Source Heat Pump Cooling System". Fluids 7, n.º 7 (20 de julho de 2022): 250. http://dx.doi.org/10.3390/fluids7070250.

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Ejector-based refrigeration systems can make direct use of many forms of thermal energy, such as solar thermal, waste heat, biogas, or natural gas. The present paper describes the estimation of the thermal coefficient of performance (COP) of a binary fluid ejector ground source heat pump (BFE GSHP) cooling system. A method for fluid selection was defined based on the favorable thermo-physical properties of the working fluids. A short list of fluid pairs were selected based on their favorable properties for the BFE GSHP cooling system. Computational Fluid Dynamics (CFD) investigation was conducted for the selected fluid pairs and a suitable ejector geometry is proposed for the high compression ratios encountered in the GSHP applications. The mixing between primary and secondary fluids was investigated using physical analysis of the CFD results. The effect of the fluids’ thermo-physical properties on the system performance was also discussed.

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Introini, Carolina, Stefano Lorenzi, Antonio Cammi, Davide Baroli, Bernhard Peters e Stéphane Bordas. "A Mass Conservative Kalman Filter Algorithm for Computational Thermo-Fluid Dynamics". Materials 11, n.º 11 (8 de novembro de 2018): 2222. http://dx.doi.org/10.3390/ma11112222.

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This paper studies Kalman filtering applied to Reynolds-Averaged Navier–Stokes (RANS) equations for turbulent flow. The integration of the Kalman estimator is extended to an implicit segregated method and to the thermodynamic analysis of turbulent flow, adding a sub-stepping procedure that ensures mass conservation at each time step and the compatibility among the unknowns involved. The accuracy of the algorithm is verified with respect to the heated lid-driven cavity benchmark, incorporating also temperature observations, comparing the augmented prediction of the Kalman filter with the Computational Fluid-Dynamic solution found on a fine grid.

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Nakajima, Y., E. Ejiri e J. Otsuka. "Thermo-Fluid Dynamics Simulation of Passive Type PEFC by COMSOL Multipysics". ECS Transactions 50, n.º 2 (15 de março de 2013): 237–43. http://dx.doi.org/10.1149/05002.0237ecst.

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Paoletti, D., D. Ambrosini e S. Sfarra. "33rd UIT (Italian Union of Thermo-fluid dynamics) Heat Transfer Conference". Journal of Physics: Conference Series 655 (16 de novembro de 2015): 011001. http://dx.doi.org/10.1088/1742-6596/655/1/011001.

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SATO, Yohei, e Yutaka KAZOE. "1501 Leading-Edge Sensing for Nano- and Microscale Thermo-Fluid Dynamics". Proceedings of the Fluids engineering conference 2009 (2009): 463–64. http://dx.doi.org/10.1299/jsmefed.2009.463.

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IMURA, Tadatsugu. "G0105 An Investigation on the Thermo-Fluid Dynamics of Kelp Drying". Proceedings of the Fluids engineering conference 2013 (2013): _G0105–01_—_G0105–02_. http://dx.doi.org/10.1299/jsmefed.2013._g0105-01_.

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IMURA, Tadatsugu, Hiromasa KATO e Kenichi FUNAZAKI. "415 An Investigation on the Thermo-Fluid Dynamics of Kelp Drying". Proceedings of Autumn Conference of Tohoku Branch 2013.49 (2013): 125–26. http://dx.doi.org/10.1299/jsmetohoku.2013.49.125.

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Lee, Seung D., Jong K. Lee e Kune Y. Suh. "Natural convection thermo fluid dynamics in a volumetrically heated rectangular pool". Nuclear Engineering and Design 237, n.º 5 (março de 2007): 473–83. http://dx.doi.org/10.1016/j.nucengdes.2006.07.012.

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Fiaschi, Daniele, Giampaolo Manfrida e Francesco Maraschiello. "Thermo-fluid dynamics preliminary design of turbo-expanders for ORC cycles". Applied Energy 97 (setembro de 2012): 601–8. http://dx.doi.org/10.1016/j.apenergy.2012.02.033.

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Panão, M. R. O., e A. L. N. Moreira. "Thermo- and fluid dynamics characterization of spray cooling with pulsed sprays". Experimental Thermal and Fluid Science 30, n.º 2 (novembro de 2005): 79–96. http://dx.doi.org/10.1016/j.expthermflusci.2005.03.020.

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Šulc, Stanislav, Vít Šmilauer e František Wald. "COUPLED SIMULATION FOR FIRE-EXPOSED STRUCTURES USING CFD AND THERMO-MECHANICAL MODELS". Acta Polytechnica CTU Proceedings 13 (13 de novembro de 2017): 121. http://dx.doi.org/10.14311/app.2017.13.0121.

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Fire resistance of buildings is based on fire tests in furnaces with gas burners. However, the tests are very expensive and time consuming. This article presents a coupled simulation of an element loaded by a force and a fire loading. The simulation solves a weakly-coupled problem, consisting of fluid dynamics, heat transfer and mechanical model. The temperature field from the computational fluid dynamics simulation (CFD) creates Cauchy and radiative boundary conditions for the thermal model. Then, the temperature field from element is passed to the mechanical model, which induces thermal strain and modifies material parameters. The fluid dynamics is computed with Fire Dynamics Simulator and the thermo-mechanical task is solved in OOFEM. Both softwares are interconnected with MuPIF python library, which allows smooth data transfer across the different meshes, orchestrating simulations in particular codes, exporting results to the VTK formats and distributed computing.

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Ludovisi, Daniele, Soyoung S. Cha, Raranaynan Ramachandran e William M. Worek. "Systematic non-dimensional parametric investigation for the thermo-fluid dynamics of two-layered fluid systems". International Journal of Heat and Mass Transfer 56, n.º 1-2 (janeiro de 2013): 787–801. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2012.08.039.

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Jayaraman, Balaji, Siddharth Thakur e Wei Shyy. "Modeling of Fluid Dynamics and Heat Transfer Induced by Dielectric Barrier Plasma Actuator". Journal of Heat Transfer 129, n.º 4 (2 de janeiro de 2007): 517–25. http://dx.doi.org/10.1115/1.2709659.

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Glow discharge at atmospheric pressure using a dielectric barrier discharge can induce fluid flow, and can be used for active control of aerodynamics and heat transfer. In the present work, a modeling framework is presented to study the evolution and interaction of such athermal nonequilibrium plasma discharges in conjunction with low Mach number fluid dynamics and heat transfer. The model is self-consistent, coupling the first-principles-based discharge dynamics with the fluid dynamics and heat transfer equations. Under atmospheric pressure, the discharge can be simulated using a plasma–fluid instead of a kinetic model. The plasma and fluid species are treated as a two-fluid system coupled through force and pressure interactions, over decades of length and time scales. The multiple-scale processes such as convection, diffusion, and reaction/ionization mechanisms make the transport equations of the plasma dynamics stiff. To handle the stiffness, a finite-volume operator-split algorithm capable of conserving space charge is employed. A body force treatment is devised to link the plasma dynamics and thermo-fluid dynamics. The potential of the actuator for flow control and thermal management is illustrated using case studies.

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Gomez, Ricardo S., Túlio R. N. Porto, Hortência L. F. Magalhães, Antonio C. Q. Santos, Victor H. V. Viana, Kelly C. Gomes e Antonio G. B. Lima. "Thermo-Fluid Dynamics Analysis of Fire Smoke Dispersion and Control Strategy in Buildings". Energies 13, n.º 22 (17 de novembro de 2020): 6000. http://dx.doi.org/10.3390/en13226000.

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Smoke is the main threat of death in fires. For this reason, it becomes extremely important to understand the dispersion of this pollutant and to verify the influence of different control systems on its spread through buildings, in order to avoid or minimize its effects on living beings. Thus, this work aims to perform thermo-fluid dynamic study of smoke dispersion in a closed environment. All numerical analysis was performed using the Fire Dynamics Simulator (FDS) software. Different simulations were carried out to evaluate the influence of the exhaust system (natural or mechanical), the heat release rate (HRR), ventilation and the smoke curtain in the pollutant dispersion. Results of the smoke layer interface height, temperature profile, average exhaust volumetric flow rate, pressure and velocity distribution are presented and discussed. The results indicate that an increase in the natural exhaust area increases the smoke layer interface height, only for the well-ventilated compartment (open windows); an increase in the HRR accelerates the downward vertical displacement of the smoke layer and that the 3 m smoke curtain is efficient in exhausting smoke, only in the case of poorly ventilated compartments (i.e., with closed windows).

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Bessho, Makoto, e Masashi Ohkawa. "Modeling of Fluid Dynamics and Thermo-Chemical System in Halogen Lamp Operation". JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 93, n.º 11 (2009): 814–26. http://dx.doi.org/10.2150/jieij.93.814.

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Fernandes Magalhães, H. Luma, G. Moreira, B. R. de Brito Correia, R. Soares Gomez, A. G. Barbosa de Lima e Severino Rodrigues de Farias Neto. "Thermo-Fluid Dynamics Analysis of the Oil-Water Separation Using Ceramic Membrane". Diffusion Foundations 24 (setembro de 2019): 37–60. http://dx.doi.org/10.4028/www.scientific.net/df.24.37.

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One of the main challenges related to the oil industry is the conscious disposal of effluents from the stages of oil exploration and production. The treatment of the water produced originated these processes has become a challenge for the sector. The membrane filtration technique emerges as an important tool in the treatment of these oily waters, due to their good characteristics, such as uniformity in permeate quality and long shelf life. In this work, a 2D mathematical model was developed, using computational fluid dynamics (CFD) as tool for the evaluation of the water-oil separation process in a tubular ceramic membrane. Linear momentum, energy, and mass conservation equations were used, which were solved using the commercial package ANSYS CFX® 15. The results obtained demonstrate that the developed model was able to predict the behavior of the water/oil separation process through the membrane, evidencing the influence of the oil particle size under the formation of the polarization layer by concentration, as well as, allowed to verify the importance of the temperature and the retention index of the solute under the permeation velocity and system performance.

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NAKAJIMA, Yasuaki, Jumpei OHTSUKA e Eiji EJIRI. "J056021 Thermo-Fluid Dynamics Simulation of Passive Type PEFC by COMSOL Multiphysics". Proceedings of Mechanical Engineering Congress, Japan 2012 (2012): _J056021–1—_J056021–3. http://dx.doi.org/10.1299/jsmemecj.2012._j056021-1.

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Vitali, Luigi, Alfonso Niro, Luigi Colombo e Giorgio Sotgia. "31st UIT (Italian Union of Thermo-fluid-dynamics) Heat Transfer Conference 2013". Journal of Physics: Conference Series 501 (10 de abril de 2014): 011001. http://dx.doi.org/10.1088/1742-6596/501/1/011001.

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BESSHO, Makoto, e Masashi OHKAWA. "Modeling of Fluid Dynamics and Thermo-Chemical System in Halogen Lamp Operation". Journal of Light & Visual Environment 35, n.º 1 (2011): 7–22. http://dx.doi.org/10.2150/jlve.35.7.

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