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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Influence of mesh and combustion parameters on a spark ignition engine CFD simulation [PDF]
FME Transactions, 2023 In the current paper, a CFD simulation study on a pent-roof, spark ignition engine was performed. The scope was to analyze the basic parameters that influence the performances of the simulation: mesh configuration, mesh refinement, turbulence model, and ...
Senčić Tomislav +3 more
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Analysis of Flow Characteristics and Effects of Turbulence Models for the Butterfly Valve
Applied Sciences, 2021 In the present study, the flow characteristics of butterfly valves with different sizes DN 80 (nominal diameter: 76.2 mm), DN 262 (nominal diameter: 254 mm), DN 400 (nominal diameter: 406 mm) were numerically investigated under different valve opening ...
Sung-Woong Choi +2 more
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Numerical simulation of JBC flow based on GEKO model
Zhongguo Jianchuan Yanjiu, 2022 ObjectivesTwo-equation models are the turbulence models most commonly used for RANS calculations in engineering applications. The SST k-ω turbulence model is self-adaptive of wall distance and capable of predicting adverse pressure gradient flows ...
Hui XU, Takanori HINO, Zuogang CHEN
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Moving Spatial Turbulence Model for High-Fidelity Rotorcraft Maneuvering Simulation
Mathematics, 2022 A moving spatial turbulence model is developed for rotorcraft maneuvering simulation under different flight conditions. The recursive algorithms are adopted to model its distributed longitudinal turbulence components, which are correlated with the ...
Honglei Ji, Linghai Lu, Renliang Chen
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Improving the quality of design calculations of viscous flow in low-flow centrifugal compressor stages by methods of computational fluid dynamics through reasonable application of different turbulence models [PDF]
Омский научный вестник, 2021 The paper considers the issue of improving the quality of the numerical experiment in the calculation of viscous gas in the flowing part of a low-flow centrifugal compressor stage.
S. V. Kartashev, Yu. V. Kozhukhov
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A Machine Learning-Based Model for Flight Turbulence Identification Using LiDAR Data
Atmosphere, 2023 By addressing the imbalanced proportions of the data category samples in the velocity structure function of the LiDAR turbulence identification model, we propose a flight turbulence identification model utilizing both a conditional generative adversarial
Zibo Zhuang +4 more
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Burgers' Turbulence Models [PDF]
The Physics of Fluids, 1969 A detailed investigation of the stability of the solutions and the growth of secondary solutions beyond the critical points is carried out for the Burgers' model equations. It is found that the transitions at some critical points are very much like the intuitive description given by Landau; however, the possibility of finite jumps is also encountered.
Case, K. M., Chiu, S. C.
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The Application of the γ-Reθt Transition Model Using Sustaining Turbulence
Energies, 2022 The freestream turbulence intensity is an important parameter for Tollmien–Schlichting waves and is also used as one of the key variables for the local- and transport-equation-based transition model in the simulations.
Meihong Zhang +3 more
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Astrophysical turbulence modeling [PDF]
Reports on Progress in Physics, 2011 The role of turbulence in various astrophysical settings is reviewed. Among the differences to laboratory and atmospheric turbulence we highlight the ubiquitous presence of magnetic fields that are generally produced and maintained by dynamo action.
Brandenburg, Axel, Nordlund, Åke
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