Results 1 to 10 of about 13,783 (178)
A Near-Wall Methodology for Large-Eddy Simulation Based on Dynamic Hybrid RANS-LES [PDF]
EntropyAttempts to mitigate the computational cost of fully resolved large-eddy simulation (LES) in the near-wall region include both the hybrid Reynolds-averaged Navier–Stokes/LES (HRL) and wall-modeled LES (WMLES) approaches.
Michael Tullis, D. Keith Walters
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Hybrid RANS/LES of plane impinging jets with k-omega based models [PDF]
, 2010 Plane impinging jets with nozzle-plate distances H/B=10 at Re=13500 and H/B=9.2 at Re=20000 are simulated with k-omega based hybrid RANS/LES models. Three ways of substitution of the turbulent length scale by the local grid size in the LES mode of the ...
Dick, Erik, Kubacki, Slawomir
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Simulation of Flow Around a Finite Rectangular Prism: Influence of Mesh, Model, and Subgrid Length Scale [PDF]
EntropyThis study investigates the flow field around a finite rectangular prism using both experimental and computational methods, with a particular focus on the influence of the turbulence approach adopted, the mesh resolution employed, and different subgrid ...
Xutong Zhang +4 more
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Physically Consistent Resolving Simulations of Turbulent Flows [PDF]
EntropyUsually applied simulation methods for turbulent flows as large eddy simulation (LES), wall-modeled LES (WMLES), and detached eddy simulation (DES) face significant challenges: they are characterized by improper resolution variations and essential ...
Stefan Heinz
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Simulation at Mach 2 flow of ethylene/air reacting mixture within a cavity flame holder [PDF]
HeliyonThe ongoing simulation of flame holder cavities remains a pivotal aspect in the advancement of scramjet engine development. This study aims to evaluate the applicability of Reynolds Averaged Navier-Stokes (RANS) turbulence models in simulating supersonic
Zachary Chapman +2 more
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Active model split hybrid RANS/LES [PDF]
Physical Review Fluids, 2022 Reliably predictive simulation of complex flows requires a level of model sophistication and robustness exceeding the capabilities of current Reynolds-averaged Navier-Stokes (RANS) models. The necessary capability can often be provided by well-resolved large eddy simulation (LES), but, for many flows of interest, such simulations are too ...
Sigfried W. Haering +2 more
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Numerical Modeling of Wind Distribution Around a Tall Building in a 3D Urban Environment [PDF]
Renewable Energy Research and Applications, 2022 This study applies an appropriate turbulence model to simulate the wind distribution in a 3D urban area around a tall building as a bluff body which is one of the most important research topics due to the increasing concerns about human health risks due ...
M. Ahmadi +2 more
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Cutting-Edge Turbulence Simulation Methods for Wind Energy and Aerospace Problems
Fluids, 2021 The availability of reliable and efficient turbulent flow simulation methods is highly beneficial for wind energy and aerospace developments. However, existing simulation methods suffer from significant shortcomings.
Stefan Heinz +2 more
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The DDES around Wing Based on Improved Mixed Length Scale [PDF]
Hangkong bingqi, 2022 For the separation problem at small and medium angles of attack, in the early stage of DDES (Delayed Detached Eddy Simulation) method, it takes some time for the flow separation region to develop, and usually delays the switch from RANS mode to LES mode,
Qiu Dexin, Wang Liangjun, Zhang Wu
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A DDES Model with Subgrid-scale Eddy Viscosity for Turbulent Flow [PDF]
Journal of Applied Fluid Mechanics, 2022 The original (delayed) detached-eddy simulation ((D)DES), a widely used and efficient hybrid turbulence method, is confronted with some flaws containing grid-induced separation (GIS), log-layer mismatch (LLM), and slow RANS-LES transition. A novel hybrid
P. Ding, X. Zhou
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