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Academic Lectures
ME Distinguished Speaker: Dr. Min Wang, LANL
Department / Organization: Mechanical Engineering
"Particle-Fluid-Particle Stress: an Important New Physics for Disperse Multiphase Flows"
The phase interaction models for disperse multiphase flows are crucial for modeling various scientific and engineering applications. In the existing theory of disperse multiphase flows, phase interactions are represented as forces between the phases. It is well known that models using only force-based interactions are ill-posed, resulting in non-hyperbolic governing equations. In this work, using ensemble averaging and nearest particle statistics, the fluid-particle phase interaction is decomposed into a particle-mean-field force (representing the conventional drag force) and the divergence of the particle-fluid-particle (PFP) stress. To explore the physics of PFP stress and develop a practical mathematical model, a series of particle-resolved simulations have been conducted.
Dr. Min Wang is a Staff Scientist in Fluid Dynamics and Solid Mechanics Group at Theoretical Division in Los Alamos National Laboratory (LANL) US. He obtained his PhD in computational mechanics, DEM-LBM/CFD, from Swansea University in 2016
