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“走向深海”系列讲座
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【“走向深海”系列讲座第28期预告】胡湘渝:SPH modeling of fluid-structure interaction
时间:2018年08月14日 18:31来源: 点击数:

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报告人: 胡湘渝 教授

               德国慕尼黑工业大学(Technical University of Munich)空气动力学与流体力学研究所

主持人:刘谋斌 教授

时   间:8月27日(星期一)上午9:30-11:30

地   点:廖凯原楼511会议室

Abstract:

This work concerns a numerical modeling of FSI (fluid-structure interaction) problems in a uniform SPH (smoothed particle hydrodynamics) framework. It combines a conventional Eulerian SPH scheme advancing fluid motions with a total Lagrangian SPH formulation dealing with the structure deformations. To remedy the incompleteness of the kernel support at structure boundaries when evaluating strains and inter-particle forces between solid particles, a correction matrix is employed to restore first order consistency and rotational invariance of Green strain tensor. Since both fluid and solid governing equations are solved in SPH framework, coupling becomes straightforward and meanwhile the momentum of an FSI system is strictly conservative. Several tests including structure oscillation and FSI benchmark cases have been carried out to validate the modeling and demonstrate its potential.

Bio-sketch:

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Dr. Xiangyu Hu obtained his PhD degree from Beijing Institute of Technology in 1999. After the post-doctoral researches in Beijing, Singapore, and Dresden, he joined Technical University of Munich as scientific assistant in 2006. He is now serving the Institute of Aerodynamics and Fluid Mechanics as adjunct teaching professor. He is also serving the International SPHERIC Steering Committee from 2008.

Dr. Hu has been engaged in researches on computational fluid dynamics (CFD). His main research fields are multi-resolution and multi-scale modeling of multiphase flow, smoothed particle hydrodynamics (SPH) method, high-order numerical schemes and others. He has authored or co-authored more than 60 papers in scientific journals and more than 100 presentations in international conferences. He has given more than 20 invited talks in research institutes and universities.

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