On the Double-Step PIV Algorithm of Wall-Bounded Flows

被引：0
|
作者：
Zhu, Yiding [1 ]
机构：
[1] Peking Univ, State Key Lab Turbulence & Complex Syst, Coll Engn, Beijing 100871, Peoples R China
来源：
ADVANCES IN APPLIED MATHEMATICS AND MECHANICS | 2019年 / 11卷 / 03期
基金：
中国国家自然科学基金;
关键词：
PIV; hypersonic boundary layer; window-correlation algorithm; VORTEX-SURFACE FIELDS; TAYLOR-GREEN; LAYER; THIN; IMPROVEMENT; TRANSITION; ZIGZAG;
D O I：
10.4208/aamm.2018.s11
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Double-step interrogation schemes with decreasing window size are investigated. Particle image pairs are created by Monte Carlo methods based on a simulated hypersonic transitional boundary layer flow. Two types of initial-step interpolation, with and without non-slip conditions at the wall (so-called CSIN and CSI), are respectively investigated. It can be concluded that the non-slip condition is very important to the multi-grid interrogation scheme. CSIN has a good agreement with the preset results but CSI does not. The error level of CSI near the wall is nearly 5 times that of CSIN.
引用
收藏
页码：675 / 685
页数：11
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