Abstract: Space-time correlation is a staple method for investigating the dynamic coupling of spatial and temporal scales of motion in turbulent flows. In this talk, I will introduce our resent work on space-time correlations for turbulent flows and time-accurate large eddy simulation (LES) of turbulence-generated noise: the Taylor, Kraichnan-Tennekes and elliptic approximation (EA) models are re-examined in terms of the picture of turbulent passage; the space-time correlation is introduced to evaluate the subgrid scale (SGS) models and data-driven SGS models are developed for time-accurate LES; the large-eddy simulation for frequency spectra is used to study the noise radiated by turbulent flows around an axisymmetric body of revolution..

Curriculum Vitae: Dr. Guowei He is a professor and the academic director of Institute of Mechanics, Chinese Academy of Science. He is an elected academician of Chinese Academy of Science and a fellow of America Physical Society. He is the associated editor of APS journal “Phys Rev. Fluids”. His research interests include: turbulence statistical theory and computational modeling, large eddy simulation of turbulence-generated noise and machine learning.