Numerical Methods for Linear and Nonlinear Fluid-Structure

时间：2017年5月26日14:30

地点：2号实验楼（直角楼）313会议室

Numerical Methods for Linear and Nonlinear Fluid-Structure Interactions with Applications in Ocean Engineering

Jing Tang XING

Fluid-Structure Interaction Research Group, Faculty of Engineering & the Environment

University of Southampton, Southampton SO17 1BJ, UK

jtxing@soton.ac.uk

This seminar gives some developments of numerical methods for linear and nonlinear fluid-structure interactions (FSI) with their applications in engineering. The discussions cover the four numerical models: 1) mixed finite element (FE)-substructure-subdomain approach to deal with linear incompressible / compressible FSI involving sloshing / acoustic / explosion waves in fluids; 2) mixed FE-boundary element (BE) model to solve linear water-structure interactions with infinite fluid domain; 3) mixed FE-finite difference (FD) model for nonlinear FSI problems but no separations between fluids and solids; 4) mixed FE- particle method to simulate nonlinear FSI problems with f-s separations as well as breaking waves. The partitioned approach is suggested in base of available fluid and solid codes to separately solve the governing equations of fluid and solid and then to forward step by step through iteration until reached convergence. The selected application examples include air-liquid-shell interactions, LNG ship-water sloshing dynamics; acoustic simulation of air-building interaction system excited by human foot impacts; aircraft landing impacts on water-VLFS interaction system; turbulence flow-body interactions; breaking wave simulations for structure-fluid interactions, etc. The numerical results are compared with the experiment results or numerical data provided by the publications to demonstrate the discussion approaches.

Biography

Jing Tang Xing  is an Emeritus Professor of Applied Mechanics, FSIRG, FEE, University of Southampton. He was awarded his first degree from NPU, China in 1967. As an engineer in the Institute of Aircraft Structure & Strength, he engaged in investigations on theory and experimental techniques of structural dynamics more than 10 years. From 1978, he studied in Department of Engineering Mechanics, Tsinghua University and obtained Master and PhD degrees in 1981 and 1984 respectively. He joined BUAA from 1985 and became a full Professor of Theoretical and Applied Mechanics from 1988, and a PhD supervisor selected by Academic Degree Committee of State Council, PRC in 1992. He was given two Chinese Awards for progress in science and technology. He joined the School of Engineering Science, University of Southampton in 1998. Professor Xing’s research interest is in applied mechanics, which covers theoretical, numerical and experimental researches in dynamics including linear and nonlinear fluid-solid interactions/continuum dynamics, structural dynamics and vibration controls, numerical methods of dynamic analysis, power flow analysis etc. He has published over 250 papers in peer-reviewed journals and conferences. One of his new book “Energy Flow Theory on Nonlinear Dynamical Systems with Applications” has just published by Springer.

Professor Xing is an internationally recognized expert who has made important contributions in fluid-structure interaction dynamics, variational principles and power flow analysis, so that he has been  invited to give speeches and  lectures in many word renowned universities. He was a standing Member of Sub-Committee of Structural Dynamics, CSVE and a Standing Member and Secretary General of Fluid-Solid Interaction Sub-Committee, CSTAM in 1985 as well as a Member of Editorial Board of Journal of Vibration Engineering, CSVE in 1990. He has been elected as Chartered Mathematician Fellow of Institute of Mathematics & Applications, UK and a Member of New York Academy of Sciences, USA since 1998 as well as an Editorial advisor for Journal of Sound & Vibration in 2004, an Official Membership of ASME PVPD Fluid Structure Interaction Technical Committee in 2007.