Parallel direct method for turbulent channel flow

XI Lingchu; XIE Jiabin; BAO Yun

doi:10.11918/202001028

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Parallel direct method for turbulent channel flow

更新时间：2026-10-19

- Parallel direct method for turbulent channel flow
- Vol. 53, Issue 1, Pages: 163-167(2021)
- 作者机构：
  
  中山大学航空航天学院,广州,510275
- 作者简介：
- 基金信息：
- DOI：10.11918/202001028
  CLC： O357.5
- Published：2021
- 稿件说明：
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XI Lingchu, XIE Jiabin, BAO Yun. Parallel direct method for turbulent channel flow[J]. 2021, 53(1): 163-167.
DOI：

XI Lingchu, XIE Jiabin, BAO Yun. Parallel direct method for turbulent channel flow[J]. 2021, 53(1): 163-167. DOI： 10.11918/202001028.

摘要

采用并行直接求解方法（PDM-DNS）进行湍流槽道流的DNS模拟. 该方法能够实现较高效并行的DNS直接求解

在“天河二号”超级计算机上应用256核计算达到95%以上的并行效率. 4个算例的计算雷诺数分别为Reτ=176、544、960、2000

并与相关的计算结果进行对比

验证了数值结果的可靠性. 利用速度压力法壁面边界条件易于处理的优点

结合浸没边界法技术

在雷诺数Reτ=176的槽道中加入了局部毛刺带

为解决复杂边界条件的槽道流的问题提供了新的方法.

Abstract

In this study

the direct numerical simulations of turbulent channel flow combined with Parallel Direct Method of DNS (PDM-DNS) are performed

and high parallel efficiency is obtained. A parallel efficiency of over 95% can be achieved on 256 cores of the Tianhe-2 supercomputer. Statistics of four cases with Reτ=6

960 and 2000 have been compared with the Lee&Moser’s results and the reliability is verified. Further

based on the advantage of finite-difference with immersed boundary condition easy to deal with wall boundary condition

a simulation added local burr band at Reτ=176 has been performed to realize research of complex boundary condition. The proposed method provides a new tool for the study of turbulent channel flow with complex boundary condition.

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