Guest Speaker: Prof. PENG Di
School of Mechanical Engineering, Shanghai Jiao Tong University
Prof. Peng received his Ph.D. in aerospace engineering from The Ohio State University in 2014. He joined School of Mechanical Engineering, Shanghai Jiao Tong University in 2015, and has served as a full professor since 2021. He has over 90 journal publications and received the Chinese National Science Fund for Excellent Young Scholars. He currently serves as Editor for Advanced in Aerodynamics, and as Youth Editor for Chinese Journal of Theoretical and Applied Mechanics and Physics of Gases (in Chinese). His main research interest is development and application of advanced aerodynamic measurement techniques, including pressure-sensitive paint (PSP), temperature-sensitive paint (TSP) and phosphor thermometry.
Abstract
Fast-responding pressure- and temperature-sensitive paints (fast PSP & TSP) have evolved into powerful experimental tools for studying complex flow problems. Key advances have been made in paint development, measurement method and data processing, which extends the applications of fast PSP and TSP from regular wind-tunnel tests to more challenging conditions. Global surface pressure and heat flux measurements with high spatial and temporal resolution were achieved in supersonic and hypersonic flows. Spatial-temporal analysis on these valuable data unveiled the significant 3D effects in shock-wave/boundary-layer interactions (SWBLIs): 1. The large-scale unsteadiness in both streamwise and spanwise directions was revealed by fast PSP for various types of SWBLIs; 2. The 3D aerothermal effects in both 2D and swept SWBLIs were resolved by fast TSP on hypersonic compression ramp. These findings from the unique global view offered by fast PSP and TSP inspires future efforts on the 3D effects in SWBLIs.
