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Modeling of Nonequibrium Vibration-Dissocation Coupling under Weak Collision Conditions

By 嘉哉 板倉, 弘敏 久保田, Yoshiya ITAKURA and Hirotoshi KUBOTA


In this paper we propose a new type dissociation model named Vibrational Energy Dependent Dissociation (VEDD) suitable for Direct Simulation Monte Carlo (DSMC) calculation in high temperature air. VEDD model is devised to reproduce the coupling phenomena of vibration-dissociation by accepting weak collision conditions. To clarify the fundamental properties of chemical reaction models we have carried out the molecul ar simulation of thermal and chemical relaxation process in the isolated system. The results of simulation show that rotational and vibrational energy distribution function are greatly affected by adopting VEDD model only

Topics: Rarefied Gas, Molecular Vibration, Dissociation, NDC:370
Publisher: 千葉大学教育学部
Year: 1997
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