演講公告
新聞標題: ( 2020-03-20 )
演講主題: A kinetic model for a polyatomic gas with temperature-dependent specific heats and its application to shock-wave structure
主講人:郭鴻文教授 (成功大學數學系)
演講日期:2020 年3月31日(星期二) 14:20 –15:10
演講地點:(光復校區) 科學一館223室
摘要內容:
Abstract. We establish a new kinetic model of the Boltzmann equation for a polyatomic gas with temperature dependent specific heats.
It is an extension of the ellipsoidal statistical (ES) model for a gas with constant specific heats.
We prove the basic properties of the new model equation such as the equilibrium solution, the conservation laws, and the space-homogeneous H-theorem. The formulas of viscosity, bulk viscosity, and thermal conductivity are also derived from the model equation by the Chapman-Enskog expansion. Then, the new model equation is used to investigate the structure of a plane shock wave with special interest in the carbon dioxide gas, which is known to have a very large bulk viscosity, and in the case of relatively strong shock waves. From the numerical and analytical results, the effect of temperature-dependent specific heats is clarified. This is a joint work with Shingo Kosuge and Kazuo Aoki.相關檔案:Talk_1090331.pdf
