TY - JOUR
T1 - On the Double-Step  PIV Algorithm of Wall-Bounded Flows
AU - Zhu , Yiding
JO - Advances in Applied Mathematics and Mechanics
VL - 3
SP - 675
EP - 685
PY - 2019
DA - 2019/01
SN - 11
DO - http://doi.org/10.4208/aamm.2018.s11
UR - https://global-sci.org/intro/article_detail/aamm/12990.html
KW - PIV, hypersonic boundary layer, window-correlation algorithm.
AB - <p style="text-align: justify;">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.&nbsp; The error level of CSI near the wall is nearly 5 times that of CSIN.</p>