Large-Eddy Simulation of Multiscale Particle Dynamics at High Volume Concentration in Turbulent Channel Flow

2010 ◽  
pp. 95-113
Author(s):  
Bernard J. Geurts
Keyword(s):  
Large Eddy Simulation ◽  
Channel Flow ◽  
Volume Concentration ◽  
Turbulent Channel Flow ◽  
High Volume ◽  
Particle Dynamics ◽  
Eddy Simulation ◽  
Large Eddy ◽  
High Volume Concentration

Large Eddy Simulation of Turbulent Channel Flow with 3D Roughness Using a Roughness Element Model

2008 ◽  
Vol 25 (1) ◽  
pp. 191-194 ◽  
Author(s):  
Yang Fan ◽  
Zhang Hui-Qiang ◽  
Chan Cheong-Ki ◽  
Wang Xi-Lin
Keyword(s):  
Large Eddy Simulation ◽  
Channel Flow ◽  
Roughness Element ◽  
Turbulent Channel Flow ◽  
Element Model ◽  
Eddy Simulation ◽  
Large Eddy

scholarly journals Comparative Study of Standard Smagorinsky Model and Dynamic Smagorinsky Model in Large Eddy Simulation of Turbulent Channel Flow

2020 ◽  
Vol 12 (1) ◽  
pp. 39-53
Author(s):  
M. S. I. Mallik ◽  
M. A. Hoque ◽  
M. A. Uddin
Keyword(s):  
Large Eddy Simulation ◽  
Comparative Study ◽  
Channel Flow ◽  
Flow Simulation ◽  
Turbulent Channel Flow ◽  
Smagorinsky Model ◽  
Order Accuracy ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Contour Plots

This paper presents results of comparative study of large eddy simulation (LES) that is applied to a plane turbulent channel flow. The LES is performed by using a finite difference method of second order accuracy in space and a low-storage explicit Runge-Kutta method with third order accuracy in time. In the LES for subgrid-scale (SGS) modelling, Standard Smagorinsky Model (SSM) and Dynamic Smagorinsky Model (DSM) are used. Essential turbulence statistics from the two LES approaches are calculated and compared with those from direct numerical simulation (DNS) data. Comparing the results throughout the calculation domain, it has been found out that SSM performs better than DSM in the turbulent channel flow simulation. Flow structures in the computed flow field by the SSM and DSM are also discussed and compared through the contour plots and iso-surfaces.

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