Scholarlink

A comparative study varying both the hybrid interface location and grid spacing was conducted on a transonic buffeting flow involving an unsteady shock-wave/turbulent-boundary-layer interaction by Zonal DES, a hybrid RANS/LES method. It was demonstrated that the hybrid interface as high as 1.5 times the boundary-layer thickness was a good choice for reproducing the unsteady nature of the buffet, on the contrary to the typically recommended value of y+ around 100 (corresponding to 3.4% the boundary-layer thickness). With this interface location of y+ being 60, the grid spacing recommended for flat plate boundary-layer or even the reduced cell size led to notorious, early grid-induced separation upstream the shock.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effects of LES/RANS Hybrid Interface Location on Oscillating Shockwave in Transonic Buffeting Flow

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • K. Kitamura,
  • Y. Tsukamoto,
  • Z.-N. Wang,
  • F. M. Möller,
  • P. G. Tucker

摘要

A comparative study varying both the hybrid interface location and grid spacing was conducted on a transonic buffeting flow involving an unsteady shock-wave/turbulent-boundary-layer interaction by Zonal DES, a hybrid RANS/LES method. It was demonstrated that the hybrid interface as high as 1.5 times the boundary-layer thickness was a good choice for reproducing the unsteady nature of the buffet, on the contrary to the typically recommended value of y+ around 100 (corresponding to 3.4% the boundary-layer thickness). With this interface location of y+ being 60, the grid spacing recommended for flat plate boundary-layer or even the reduced cell size led to notorious, early grid-induced separation upstream the shock.