Results 11 to 20 of about 28,275 (194)
Low Reynolds number k-ε modeling by using the direct numerical simulation (DNS) data
مجلة علوم ذي قار, 2019 The constant C and the near-wall damping function f in the eddyviscosityrelation of the k-ε model are evaluated from direct numerical simulation (DNS) data for developed channel and boundary-layer flow, eachat two Reynolds numbers. Various existing f µ µ model functions are compared with the DNS data, and a new function is fitted to the high ...
Ahmed Abdul-Hussein
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Journal of Advances in Modeling Earth SystemsAbstractParticle‐resolved direct numerical simulations (PR‐DNS) play an increasing role in investigating aerosol‐cloud‐turbulence interactions at the most fundamental level of processes. However, the high computational cost associated with high resolution simulations poses considerable challenges for large domain or long duration simulation using PR ...
Tao Zhang +7 more
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Prediction of the Supersonic Flow Base Pressure by Axisymmetric Direct Numerical Simulation [PDF]
Journal of Applied and Computational Mechanics, 2023 Axisymmetric direct numerical simulation (DNS) has been carried out to predict supersonic base flow behavior. Substantially fine grid has been used to perform calculations for the flow with Reynolds number up to 106.
Sergey A. Karskanov +5 more
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Mathematical Methodology and Metallurgical Application of Turbulence Modelling: A Review
Metals, 2021 This paper focusses on three main numerical methods, i.e., the Reynolds-Averaged Navier-Stokes (RANS), Large Eddy Simulation (LES), and Direct Numerical Simulation (DNS) methods. The formulation and variation of different RANS methods are evaluated.
Yannan Wang +4 more
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Ecotoxicology and Environmental Safety, 2022 Thermophoresis is of common interest due to its influence on the deposition of particles. Present research on thermophoretic deposition mainly focused on the sub-micron particles, whereas the particle size during the radioactive aerosol monitoring ...
Sen Han, Yu Li, Gang Wen, Tinglin Huang
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Error of large-eddy simulation in the wall pressure fluctuation of a turbulent channel flow
Theoretical and Applied Mechanics Letters, 2021 We analyze the error of large-eddy simulation (LES) in wall pressure fluctuation of a turbulent channel flow. To separate different sources of the error, we conduct both direct numerical simulations (DNS) and LES, and apply an explicit filter on DNS data
Rong Li +4 more
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The study of the effect of small-scale turbulence on internal gravity waves propagation in a pycnocline [PDF]
Nonlinear Processes in Geophysics, 2013 This paper presents the results of modeling the interaction between internal waves (IWs) and turbulence using direct numerical simulation (DNS). Turbulence is excited and supported by a random forcing localized in a vertical layer separated from the ...
O. A. Druzhinin +2 more
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Large Eddy Simulation of Free Motion of Marine Riser using OpenFOAM [PDF]
한국해양공학회지, 2019 In this study, the free motion of a riser due to vortex shedding was numerically simulated with Large Eddy Simulation (LES) and Detached Eddy Simulation (DES) turbulence models.
Jae-Hwan Jung +3 more
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Case Studies in Thermal Engineering, 2021 The effect of variations in the aspect ratio (AR) of an inner cylinder on 3D mixed convection is examined by numerical means. Three Reynolds numbers are considered, Re = 100, 500, and 1000, with a fixed Grashof number of 105 and a Prandtl number of 0.7 ...
Hyun Woo Cho +4 more
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An Attempt for Suppression of Wing-Tip Vortex Using Plasma Actuators
Journal of Fluid Science and Technology, 2011 Influence of the flow induced by dielectric barrier discharge (DBD) plasma actuators on the wing-tip vortex is investigated numerically and experimentally.
Hitomi HASEBE +2 more
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