Prof.  Bin  Xie
Shanghai JiaoTong University,  China

Title: High-fidelity numerical simulation of two-phase flows on the unstructured grids

Abstract:

Unstructured grid has been the main solution to solve fluid engineering problems in computational fluid dynamics (CFD). However, due to the randomness of data storage structure, the disorder of mesh topology and the irregularity of mesh shape, it brings great challenges to the development of high-precision numerical methods. In order to overcome the limitations of conventional unstructured methods, we have proposed VPM and THINC/QQ schemes for accurate and robust numerical simulation. Some high-fidelity interface two-phase flow models are also developed for compressible and incompressible flows. The results show that compared with the conventional method, the new model at least has the following advantages: 1) it greatly reduces the solution dependence on the shape and quality of the grid element; 2) it significantly improves the convergence behavior of numerical results with grid numbers and time steps; 3) it effectively suppresses the spurious velocity and numerical noises around the interface, so as to comprehensively enhance the accuracy and reliability of the computational results. This talk will also report some progresses for their applications to numerical simulation of complex flows in the field of ocean engineering.

Biography:

Prof. Xie graduated from Harbin Institute of Technology and received his PH.D from Tokyo Institute of Technology in 2015. After that, he became an assistant professor in Shanghai JiaoTong University and promoted to be the associated professor in Shanghai JiaoTong University. His major research interest is focused on advanced numerical scheme on unstructured grids and high-fidelity numerical models for multiphase flows. In this area, he has published over 50 papers in international journals such as Journal of Computational Physics and International Journal of Multiphase Flows. He has finished the project of National Natural Science Youth Fund of China and JSPS Youth Fund of the Ministry of Education of Japan and led the project of “Shanghai Pilot Program for Basic Research”. He has received talent awards including Japan Society for the Promotion of Science (JSPS) research fellow and Shanghai Science and Technology Development Funds. He is serving as the Multiphase Technical Committee Member of OpenFOAM Since 2023.