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【学术活动预告】新加坡国立大学舒昌教授讲座
发布时间: 2015-06-05 浏览次数: 415 文章作者: 文章出处:
 



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舒昌教授,19831986年分别在南京航空航天大学获得学士和硕士学位;1991年获得英国格拉斯哥(Glasgow)大学博士学位。1992年起在新加坡国立大学机械工程系任教,并于2006年晋升为正教授。2007年获得国家自然基金海外杰出青年基金和教育部长江学者讲座教授。舒昌教授长期从事计算流体动力学的研究工作,主要研究方向包括偏微分方程的高效数值方法、格子Boltzmann方法及其应用、气体动力学格式及其应用、动边界和多相流的数值研究。迄今已在计算流体力学和计算科学领域国际杂志上发表专著2本、国际期刊论文250多篇。其研究工作在GOOGLE SCHOLAR上被引用超过8600次,H-指数为49

题目:SomeProgresses in Local Reconstruction of Flux Solvers in CFD

内容摘要:

Finite volume method is one of the most popular numerical approaches in computational fluid dynamics (CFD). It involves conservative flow variables defined at cell centres and numerical fluxes at cell interfaces. Usually, the flow variables at cell centres are defined as unknowns. Then we need to locally construct a solution from flow variables at cell centres to evaluate fluxes at cell interfaces. Currently, there are three major approaches to reconstruct the solution for evaluation of fluxes. They are based on smooth function approximation (general solver), one-dimensional Euler equation (Riemann solver), and continuous Boltzmann equation (gas-kinetic solver). In this talk, a brief review of current 3 flux solvers will be presented first. Then the newly-developed lattice Boltzmann flux solver, circular function-based gas kinetic flux solver and the simple gas kinetic flux solver will be shown in details. These solvers evaluate viscous and inviscid fluxes simultaneously and physically. They combine advantages of conventional Navier-Stokes solvers and lattice Boltzmann/gas kinetic solvers. The fluid flows from incompressible regime to hypersonic regime can be well simulated by these solvers. The proposed new flux solvers will be validated by various numerical examples.

时间地点: 2015619日上午1000-11:00机械工程学院第一会议室