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Discrete unified gas kinetic scheme for multiscale flow and heat transfer
 Discrete unified gas kinetic scheme for multiscale flow and heat transfer 教师介绍 本讲教师：郭照立 所属学科：理科 人　　气：238 课程介绍 摘要:Multiscale flow and heat transfer phenomena appear in many fields, such as nano/micro fluidics, re-entry vehicles, and nanoscale materials. It is a challenging problem for modeling and simulating such processes due to the large span of temporal and spatial scales. In this talk, we will report the development and recent progress of the discrete unified gas kinetic scheme (DUGKS) method for modeling multiscale flow and heat transfer problems based on kinetic theories. As an explicit finite-volume scheme with the coupling of particle transport and collision in the flux evaluation at cell interfaces, the time step of the DUGKS is not limited by the particle collision time. With the variation of the ratio between the time step and particle collision time, the scheme exhibits the asymptotic preserving (AP) properties and can serve as a self-adaptive multiscale method for the capturing of local transport process, such that accurate solutions ranging from continuum (diffusive) to free-molecular (ballistic) regimes can be captured. A number of numerical tests of flow and heat transfer problems have been carried out. The results demonstrate that the DUGKS can serve as an efficient numerical method for simulating multiscale transport phenomena. 报告人简介：郭照立，工学博士，二级教授，博士生导师，国家杰出青年基金获得者，长江学者特聘教授。中国工程热物理学会理事，《Scientific Report》、《Advances in Applied Mathematics and Mechanics》、《Science Bulletin》、《计算物理》编委，International Conference for Mesoscopic Methods in Engineering and Science科学委员会委员，Asian Symposium on Computational Heat Transfer and Fluid Flow国际咨询委员会委员，中国自然科学基金委员会、香港研究资助局（RGC）、英国工程和自然科学研究资助局（EPSRC）、欧盟研究资助局（ERC）项目评审专家。长期从事复杂流动与传热传质的基础理论研究和数值模拟研究，在流体动理学理论与模型、介观计算方法（格子Boltzmann方法、气体动理学格式）、跨尺度多相反应流、温室气体地质封存与利用中的渗流机理等方面，取得了重要研究进展。出版著作3本，发表SCI论文130余篇，SCI引用3200余次(他引2900+)，SCI-h指数25（Google Scholar引用5800余次，h指数33），Elsevier中国高被引学者（2014、2015）。

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