Implicit time integration method for LES of complex flows

被引：2
|
作者：
Daude, Frederic [1 ]
Mary, Ivan [1 ]
Comte, Pierre [1 ,2 ]
机构：
[1] Off Natl Etud & Rech Aerosp, 29 Ave Div Leclerc, F-92322 Chatillon, France
[2] ENSMA, LEA, CEAT, F-86036 Poitiers, France
来源：
DIRECT AND LARGE-EDDY SIMULATION VI | 2006年 / 10卷
关键词：
D O I：
10.1007/978-1-4020-5152-2_89
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Implicit time integration is studied on the coupled RANS/LES of the transitional boundary layer around an airfoil near stall. A reference solution to compare with the implicit Gear scheme is determined with an explicit three-stage Runge-Kutta scheme. It is first shown that implicit simulation can find again explicit results in the transition region with a reduction factor of 2 for the CPU time. Then, large time steps can be used without threatening the agreement with explicit simulation, with similar reduction of the computational cost.
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页码：771 / +
页数：2
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