主持人：杜洁 青年研究员
报告简介：In this work, we try to develop an efficient asymptotic preserving method for frequency-dependent radiative transfer equations. Due to the optical opacity is frequency and temperature dependent, it varies from 0 to infinity, so that across three different regimes. We apply the characteristic based approach to get a revised model, and we modify it so that it can capture the free streaming regime. The new approximated model is solved by an asymptotic preserving Monte-Carlo method, in which we only solve a spatial dependent macroscopic equation (not frequency dependent). Based on the available macroscopic variables, it provides the emission source for the microscopic equation, which is then solved the Monte-Carlo method. The new method allows large time steps for all frequency regimes. Numerical experiments are given to demonstrate the effectiveness and efficiency of our approach.
主讲人简介：熊涛，中国科学技术大学做爱视频
教授，博士生导师，曾入选国家高层次青年人才，主要从事计算流体力学和动理学方程的高效高精度数值方法的研究。近些年来，主要围绕多尺度动理学方程的高效渐近保持算法展开研究，发展了具有较好稳定性且高效的高阶渐近保持间断Galerkin有限元方法等。目前主持国家重大研究计划重点培育项目，参与科技部重点专项项目等。曾主持国家自然科学面上基金、国防科研核科学挑战专题子课题等项目。
