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Kinetic Theory of Polyatomic Gases: Model Boltzmann Equations and their Application

Speaker

Kazuo Aoki, Kyoto University

Time

2020.01.07 14:00-15:00

Venue

Room 306, No.5 Science Building

Abstract

Kinetic theory of polyatomic gases is becoming increasingly important because their non-equilibrium flows are encountered in many applications, such as high-altitude flights and micro-scale systems. In the present talk, I will first give a brief introduction to kinetic theory of polyatomic gases. However, since the Boltzmann equation for a polyatomic gas cannot be written in a concrete form that can be applied to practical problems, its model equations are usually used in applications. I will focus on one of such models, that is, the ellipsoidal statistical (ES) model for a polyatomic gas that was proposed by Andries et al. and explain the form and basic properties of the model. This model is for an ideal polyatomic gas with constant specific heats (thermally perfect gas). I will also extend the ES model to a polyatomic ideal gas with temperature-dependent specific heats (calorically perfect gas). Finally, these models are applied to investigating the problem of shock-wave structure with special interest in CO2 gas, which is known to have a very large bulk viscosity.

Bio

Name: AOKI, Kazuo
Present title:
- Professor Emeritus, Kyoto University,
- Honorary Chair Professor, National Cheng Kung University
Degree:
- Doctor of Engineering, Kyoto University
Award:
- Jubilee Professor, Chalmers University of Technology (2002)
- International Prize “Tullio Levi-Civita” (2013)
Education:
- Graduated from the Department of Aeronautical Engineering, Kyoto University in 1973
- Finished the Graduate School (Master Course) at the Department of Aeronautical
Engineering, Kyoto University in 1975
- Finished the Graduate School (Doctor Course) at the Department of Aeronautical
Engineering, Kyoto University in 1978
Positions and titles: - Research Associate, Department of Aeronautical Engineering, Kyoto University from 1978 to 1985
- Associate Professor, Department of Aeronautical Engineering, Kyoto University from 1985 to 1994
- Professor, Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University from 1994 to 2005
- Professor, Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University from 2005 to 2016
- Visiting Research Fellow, National Center for Theoretical Sciences, National Taiwan University from 2016 to 2019
- Honorary Chair Professor, National Cheng Kung University from 2015 to present
- Professor Emeritus, Kyoto University from 2016 to present