學術演講
主講者: | 劉育佑 教授 (國立成功大學) |
講題: | Turbulent Flame Speeds in Level Set Models and Unsteady Flows |
時間: | 2014-11-27 (Thu.) 15:00 - 16:00 |
地點: | 數學所 演講廳(6F) (台大院區) |
Abstract: | G-equation is a popular model in turbulent combustion which describes the propagation of the thin flame front by a advection term and a laminar term. As the planar front corrugates and propagates in time, we study the asymptotic propagation speed called the turbulent flame speed (s_T). For the advection term, we study the growth rate of s_T when the flow intensity is getting larger. For the laminar term, besides the motion in normal direction, we also add the curvature/strain term to see how the growth rate of s_T is bended/quenched. In this talk, I will summarize the previous analytic works on the steady flows, and then I will update some recent numerical works on the unsteady flows. |
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