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Physically Consistent Resolving Simulations of Turbulent Flows [PDF]

open access: yesEntropy
Usually 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

An Overview of Hybrid RANS–LES Models Developed for Industrial CFD

open access: yesApplied 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

open access: yesFluids, 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 of Hypersonic Turbulent Boundary Layers

open access: yesFluids, 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

open access: yesZhongguo 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

Three-Dimensional LiDAR Wake Measurements in an Offshore Wind Farm and Comparison with Gaussian and AL Wake Models

open access: yesEnergies, 2021
Huaneng Rudong 300 MW offshore wind farm project is located in eastern China. The wake effect is one of the major concerns for wind farm operators, as all 70 units are plotted in ranks, and the sea surface roughness is low.
Xin Liu   +5 more
doaj   +1 more source

Numerical simulation of flow separation over a backward-facing step with high Reynolds number

open access: yesWater Science and Engineering, 2019
Large eddy simulation (LES) explicitly calculates the large-scale vortex field and parameterizes the small-scale vortices. In this study, LES and κ-ε models were developed for a specific geometrical configuration of backward-facing step (BFS).
Fang-fang Wang   +2 more
doaj   +1 more source

Computational fluid dynamics simulation of detonation wave propagation in modified pulse detonation combustor [PDF]

open access: yesE3S Web of Conferences, 2023
In this paper effect of Schelkin spiral material on thermal load and detonation combustion wave propagation in pulse detonation combustor has been simulated.
Debnath Pinku, Pandey K.M.
doaj   +1 more source

Numerical Simulation of Wind Turbine Aerodynamic Characteristics under Wind Shear Based on Lattice-Boltzmann Method [PDF]

open access: yesE3S Web of Conferences, 2021
In order to study the influence of wind shear on the aerodynamic characteristics of large wind turbines, taking the 5MW wind turbine blade model published by NREL as the research object, large eddy simulation (LES) of wind turbines was carried out by ...
Yuan Chengdong   +4 more
doaj   +1 more source

A new numerical framework for large-eddy simulation of waves generated by objects piercing water surface

open access: yesTheoretical and Applied Mechanics Letters, 2019
A novel numerical framework is developed for large-eddy simulation (LES) of interactions among air, water, and solid bodies. The motions of air and water are solved on a fixed block-structured mesh, with the air–water interface captured using the volume ...
Zixuan Yang, Zuo Cui, Shizhao Wang
doaj   +1 more source

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