学术活动
Self-consistent Equations for the Front in 2D Free-interface Problems
2015-03-30
来源：科技处 供稿：冀俊宇 点击次数：主讲人：Prof. Claude-Michel Brauner（厦门大学，University of Bordeaux, France）
时间：4月1日（周三）15:30-16:30
地点：必赢76net线路官网北二区教学楼 517 教室
摘要: In two-dimensional free-interface problems in combustion theory, we have defined two different approaches to study the stability of the front flame: (i) the first one is the elimination of the free interface, the price to pay being that the problem is now fully nonlinear; (ii) the second approach is the derivation of a single scalar equation for the front which may capture most of the dynamics and, as a consequence, yields a reduction of the effective dimensionality of the system. A paradigm is the Kuramoto-Sivashinsky equation which models cellular instabilities and turbulence phenomena.In this talk we are going to briefly present both approaches which actually complement each others, since the second one allows to reach asymptotic regimes including transition to chaos. Collaboration with L. Lorenzi (Parma), G.I. Sivashinsky (Tel-Aviv), J. Shen and C. Xu (Xiamen).
