Hong Kong23: Prof. Kun Xu

GPPS Hong Kong23: Keynote Speaker

Keynote Title:
Compact high-order algorithms for simulation in turbomachinery with sliding mesh


In this presentation, we will introduce the high-order compact gas-kinetic scheme (CGKS) for simulating compressible flows on a rotating coordinate frame. Our scheme utilizes the kinetic equation, which considers both centrifugal and Coriolis acceleration. By updating the cell averaged conservative variables and their gradients in both the rotating and stationary domains, we have developed a third-order compact reconstruction method with a sliding interface between them. In addition to obtaining high-order spatial reconstruction, we have also achieved fourth-order time accuracy using the multi-stage multi-derivative time stepping method, which involves only two stages for a fourth-order time accuracy. Our CGKS has been successfully applied to simulate subsonic acoustic wave propagation and high Mach number shock interactions in turbomachinery.


Prof. Kun Xu

In 1987, Prof. Kun Xu received his B.S. degree from Beijing University, and in 1993, he earned his Ph.D. degree from Columbia University. Following his Ph.D., he worked as a post-doctoral researcher at Princeton University before joining the Hong Kong University of Science and Technology (HKUST) in 1996. Currently, he holds the position of Stephen Kam Chuen Cheong Professor of Science and Chair Professor at the Mathematics Department and Mechanical and Aerospace Engineering Department at HKUST

Prof. Kun Xu, Beijing University

Prof. Kun Xu

HK Univ Sci & Tech

Our location

With team members spread across the globe, the core team is based in Zurich Switzerland.


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