Results 1 to 10 of about 2,982 (260)
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
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
Analysis of Compound Open Channel Flow Using Large Eddy Simulation (LES)
Ecology and Resilient Infrastructure, 2017 본 연구는 OpenFOAM의 large eddy simulation (LES)를 이용하여 복단면 흐름을 분석하였다. LES는 여과된 연속방정식과 운동량 방정식을 수치적으로 해석하였다. 일방정식 LES와 비균일 격자를 적용하여 벽 부근의 난류 비등방성과 이차류를 재현하였다. 복단면 개수로 난류의 LES 결과는 홍수터의 수심이 깊은 경우와 얕은 경우에 대해서 제시하였다. 이들 결과는 실험 결과와 비교하였으며 실험결과와 계산 결과는 부합되는 양상을 보여준다. 또한 이차류를 생성하는 난류 비등방성의 역할에 대해서 제시하고 있다.
exaly +3 more sources
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
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
Large‐Eddy Simulation (LES) on the Square and Triangular Tall Buildings to Measure Drag Force [PDF]
Advances in Civil Engineering, 2021 The wind load issues play a significant role in designing tall buildings, which has sometimes been considered an even more essential factor than earthquake loads. Also, investigating wind behavior in tall buildings is a crucial issue in architectural and structural design. A primary concern of wind engineering and aerodynamics is drag force. Drag force
Abdollah B. Daemei +3 more
openaire +3 more sources
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