The nonlinear large-eddy simulation method applied to Sc≈1 and Sc⪢1 passive-scalar mixing

2008 ◽  
Vol 20 (3) ◽  
pp. 035103 ◽  
Author(s):  
Gregory C. Burton
Keyword(s):  
Large Eddy Simulation ◽  
Simulation Method ◽  
Passive Scalar ◽  
Scalar Mixing ◽  
Eddy Simulation ◽  
Large Eddy

scholarly journals Large Eddy Simulation of Scalar Mixing in Jet in a Cross-Flow

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Asela Uyanwaththa ◽  
Weeratunge. Malalasekera ◽  
Graham Hargrave ◽  
Mark Dubal
Keyword(s):  
Experimental Data ◽  
Velocity Field ◽  
Large Eddy Simulation ◽  
Cross Flow ◽  
Passive Scalar ◽  
Scalar Mixing ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Fuel Mixing ◽  
Good Agreement

Jet in a cross-flow (JICF) is a flow arrangement found in many engineering applications, especially in gas turbine air–fuel mixing. Understanding of scalar mixing in JICF is important for low NOx burner design and operation, and numerical simulation techniques can be used to understand both spatial and temporal variation of air–fuel mixing quality in such applications. In this paper, mixing of the jet stream with the cross-flow is simulated by approximating the jet flow as a passive scalar and using the large eddy simulation (LES) technique to simulate the turbulent velocity field. A posteriori test is conducted to assess three dynamic subgrid scale models in modeling jet and cross-flow interaction with the boundary layer flow field. Simulated mean and Reynolds stress component values for velocity field and concentration fields are compared against experimental data to assess the capability of the LES technique, which showed good agreement between numerical and experimental results. Similarly, time mean and standard deviation values of passive scalar concentration also showed good agreement with experimental data. In addition, LES results are further used to discuss the scalar mixing field in the downstream mixing region.

Implicit large-eddy simulation of passive scalar mixing in statistically stationary isotropic turbulence

2013 ◽  
Vol 25 (2) ◽  
pp. 025101 ◽  
Author(s):  
A. J. Wachtor ◽  
F. F. Grinstein ◽  
C. R. DeVore ◽  
J. R. Ristorcelli ◽  
L. G. Margolin
Keyword(s):  
Large Eddy Simulation ◽  
Isotropic Turbulence ◽  
Passive Scalar ◽  
Scalar Mixing ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Implicit Large Eddy Simulation

Large eddy simulation of evolution of a passive scalar in plane jet

AIAA Journal ◽  
2001 ◽  
Vol 39 ◽  
pp. 1509-1516 ◽  
Author(s):  
C. Le Ribault ◽  
S. Sarkar ◽  
S. A. Stanley
Keyword(s):  
Large Eddy Simulation ◽  
Passive Scalar ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Plane Jet

Recent improvements of actuator line-large-eddy simulation method for wind turbine wakes

2021 ◽  
Vol 42 (4) ◽  
pp. 511-526
Author(s):  
Zhiteng Gao ◽  
Ye Li ◽  
Tongguang Wang ◽  
Shitang Ke ◽  
Deshun Li
Keyword(s):  
Large Eddy Simulation ◽  
Wind Turbine ◽  
Simulation Method ◽  
Eddy Simulation ◽  
Large Eddy

A finite volume dynamic large-eddy simulation method for buoyancy driven turbulent geophysical flows

2007 ◽  
Vol 17 (3) ◽  
pp. 199-218 ◽  
Author(s):  
Filippo M. Denaro ◽  
Giuliano De Stefano ◽  
Daniele Iudicone ◽  
Vincenzo Botte
Keyword(s):  
Large Eddy Simulation ◽  
Finite Volume ◽  
Simulation Method ◽  
Geophysical Flows ◽  
Eddy Simulation ◽  
Large Eddy
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