Results 1 to 10 of about 377,594 (201)
Fluid Flow and Effect of Turbulence Model on Large-Sized Triple-Offset Butterfly Valve [PDF]
Journal of Applied Fluid Mechanics, 2023 The performance a valve has been frequently estimated with numerical methods owing to limitations such as cost and place. In this study, for the triple-offset butterfly valves, the different sizes in various disc-opening cases was numerically conducted ...
M. S. Kim +4 more
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Test problem of flow modelling in the Rotor 37 compressor stage
Авіаційно-космічна техніка та технологія, 2023 The subject of the study is the dependence of the degree of pressure increase on the airflow in the impeller of the axial compressor degree. The object of study is the Rotor 37 axial compressor.
Andrii Duliepov +4 more
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AIP Advances, 2022 To improve the prediction accuracy of separated flow based on the Reynolds Averaged Navier–Stokes model, the model constants of the baseline Reynolds stress model are calibrated by the ensemble Kalman filter data assimilation method.
Xiliang Song +3 more
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Artificial neural network-based subgrid-scale models for LES of compressible turbulent channel flow
Theoretical and Applied Mechanics Letters, 2023 Fully connected neural networks (FCNNs) have been developed for the closure of subgrid-scale (SGS) stress and SGS heat flux in large-eddy simulations of compressible turbulent channel flow.
Qingjia Meng, Zhou Jiang, Jianchun Wang
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Journal of Fluid Science and Technology, 2023 In this study, the liquid film thickness of slug flow in a microchannel was numerically investigated. Particularly, we focused on a flow regime with high Reynolds and capillary numbers; these dimensionless number were independently modified to ...
Daisuke TSUNEOKA, Junnosuke OKAJIMA
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Length-Scale Correction for Reynolds Stress Modeling [PDF]
AIAA Aviation 2019 Forum, 2019 A length-scale correction term is developed for the SSG/LRR-! Reynolds-stress model that is based on an analysis of the Yap correction. The model with and without the correction is implemented into two flow solvers and applied to four flows featuring separation.
Eisfeld, Bernhard, Rumsey, Christopher
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Numerical simulation of grid-generated turbulent particulate flow by three-dimensional Reynolds stress; pp. 161–174 [PDF]
Proceedings of the Estonian Academy of Sciences, 2013 A three-dimensional (3D) Reynolds stress turbulence model based on 3D Reynolds-averaged NavierâStokes equations has been elaborated for grid-generated turbulence in particulate downward flow arranged in the channel domain of the square cross section ...
Alexander Kartushinsky +6 more
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Assessment of Reynolds-stress models for aeronautical applications
International Journal of Heat and Fluid Flow, 2022 Three Reynolds-Stress Models (RSMs) have been benchmarked on industrial configurations with aeronautical applications. The models are first compared on a zero-pressure-gradient boundary layer, which highlights the differences in the near-wall approaches of the models. Results are then analyzed for the Skåre & Krogstad adverse-pressure-gradient boundary
Sporschill, Gustave +4 more
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Computational fluid dynamics simulation of the flow patterns and performance of conventional and dual-cone gas-particle cyclones [PDF]
Journal of Heat and Mass Transfer Research, 2018 One of the main concerns of researchers is the separation of suspended particles in a fluid. Accordingly, the current study numerically investigated the effects of a conical section on the flow pattern of a Stairmand cyclone by simulating single-cone and
Seyed Masoud Vahedi +3 more
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Aerospace, 2021 Accurate predictions of flow separation are important for aerospace design, flight accident avoidance, and the development of fluid mechanics. However, the complexity of the separation process makes accurate predictions challenging for all known Reynolds-
Ruijie Bai +3 more
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