Simulation of a turbulent channel flow with an entropic Lattice Boltzmann method
Simulation of a turbulent channel flow with an entropic Lattice Boltzmann method
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DOI：
10.1002/fld.1946
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发表时间：
2009-08
影响因子：
1.8
通讯作者：
M. Spasov;D. Rempfer;P. Mokhasi
中科院分区：
文献类型：
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作者：
M. Spasov;D. Rempfer;P. Mokhasi
采用格子Boltzmann方法（LBM）对槽道湍流进行数值模拟.进行了两次模拟。一种是使用足够高的网格分辨率，以便将其视为直接数值模拟（DNS）。LBM在其传统的形式是采用这种模拟。另一个模拟使用较低的分辨率，原始方法变得不稳定。熵条件是用来使这种模拟稳定。将这两个数值实验的结果与使用传统数值技术执行的DNS的结果进行比较。结果表明，LBM格式可以作为湍流数值模拟的工具，而熵稳定的LBM格式可以在较低的网格分辨率下获得较精确的结果。版权所有© 2008约翰威利父子有限公司。
The Lattice Boltzmann method (LBM) is used to simulate turbulent channel flow. Two simulations are performed. One uses high enough grid resolution in order for it to be considered a direct numerical simulation (DNS). LBM in its traditional form is adopted for this simulation. The other simulation uses lower resolution for which the original method becomes unstable. An entropy condition is used to render this simulation stable. Results from these two numerical experiments are compared with the results from a DNS performed with traditional numerical techniques. It is concluded that LBM can be used as tool to simulate turbulent flows and entropy stabilized LBM schemes can be used to achieve accurate results with reasonably low grid resolution. Copyright © 2008 John Wiley & Sons, Ltd.