Results 1 to 10 of about 52,627 (175)
Large Eddy Simulation (LES) for IC Engine Flows [PDF]
Oil & Gas Science and Technology, 2013 Numerical computations are carried out using an engineering-level Large Eddy Simulation (LES) model that is provided by a commercial CFD code CONVERGE.
Kuo Tang-Wei +3 more
doaj +3 more sources
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
doaj +2 more sources
Parameterization of Wave-Induced Mixing Using the Large Eddy Simulation (LES) (I) [PDF]
Atmosphere, 2020 Turbulent motions in the thin ocean surface boundary layer control exchanges of momentum, heat and trace gases between the atmosphere and ocean. However, present parametric equations of turbulent motions that are applied to global climate models result ...
Haili Wang +3 more
doaj +2 more sources
Large Eddy Simulation of Turbulent Channel Flows by the Rational LES Model
, 2002 The rational large eddy simulation (RLES) model is applied to turbulent channel flows. This approximate deconvolution model is based on a rational (subdiagonal Pade') approximation of the Fourier transform of the Gaussian filter and is proposed as an alternative to the gradient (also known as the nonlinear or tensor-diffusivity) model.
Iliescu, T., Fischer, P.
openaire +4 more sources
A Near-Wall Methodology for Large-Eddy Simulation Based on Dynamic Hybrid RANS-LES. [PDF]
Entropy (Basel)Attempts 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. This paper presents an LES wall treatment method that combines key attributes of the two, in which the boundary layer mesh is sized ...
Tullis M, Walters DK.
europepmc +4 more sources
Regularization modeling for large-eddy simulation [PDF]
, 2002 A new modeling approach for large-eddy simulation (LES) is obtained by combining a `regularization principle' with an explicit filter and its inversion.
Geurts, Bernard J., Holm, Darryl D.
core +18 more sources
Experiments and Simulations of Free-Surface Flow behind a Finite Height Rigid Vertical Cylinder
Fluids, 2021 We present the results of a combined experimental and numerical study of the free-surface flow behind a finite height rigid vertical cylinder. The experiments measure the drag and the wake angle on cylinders of different diameters for a range of ...
Valentin Ageorges +4 more
doaj +1 more source
An Overview of Hybrid RANS–LES Models Developed for Industrial CFD
Applied Sciences, 2021 An overview of scale-resolving simulation (SRS) methods used in ANSYS Computational Fluid Dynamics (CFD) software is provided. The main challenges, especially when computing boundary layers in large eddy simulation (LES) mode, will be discussed.
Florian Menter +3 more
doaj +1 more source
Large Eddy Simulation of Hypersonic Turbulent Boundary Layers
Fluids, 2021 The recent revival of interest in developing new hypersonic vehicles brings attention to the need for accurate prediction of hypersonic flows by computational methods.
Nadia Kianvashrad, Doyle Knight
doaj +1 more source
Study on force spectrum characteristics of a pump-jet under inflow turbulence
Zhongguo Jianchuan Yanjiu, 2022 Objectives This paper aims to clarify the characteristics of the unsteady force spectrum of a pump-jet operating under inflow turbulence. MethodsThe turbulence grid and Fourier synthesis method are employed to produce inflow turbulence with spatial flow ...
Shuaikang SHI +3 more
doaj +1 more source