请登录 0 购物车
首页 图书 电子图书 期刊 参考文献及会议录 作者,编辑,审稿 A-Z 产品目录
Transport Phenomena in Thermal Engineering. Volume 2

ISBN 打印: 1-56700-015-0

THERMODYNAMIC AND TRANSPORT PROPERTIES OF NON-EQUILIBRIUM PLASMA

Abstract

For nonequilibrium plasma, thermodynamic and transport properties could be obtained by numerical methods. A multi-temperature thermodynamic model was introduced to quantify the properties of the nonequilibrium plasma. Equations for multi-temperature chemical compositions were derived by chemical affinity approaches. The multi-temperature model is based on generalized multi-thermal equilibrium model, in which it is assumed that a thermodynamic system is composed of sub-systems of its own temperature. The thermodynamic properties are dependent on the pressure and the temperatures. Especially, Debye-Huckel approximation is important for chemical compositions and thermodynamic properties. In this presentation, the Debye-Huckel corrections for the multi-temperature plasma are presented and their effects to the lowering of the ionization energy are discussed. Using the Debye-Huckel approximation, the properties of hydrogen plasma are evaluated for various nonequilibrium conditions. The effects of kinetic nonequilibrium and excitational nonequilibrium are summarized and the nonequilibrium transport properties are presented. Thermal conductivity, electrical conductivity, diffusion coefficient and viscosity for nonequilibrium conditions are included in the transport properties. The kinetic nonequilibrium effects to the viscosity, diffusion coefficient and thermal conductivity are significant. It was found that the excitational nonequilibrium effects are important for the nonequilibrium diagnostic methods. Without considering excitational nonequilibrium effects, the evaluated properties of the plasma could be different from the correct value upto orders of magnitude.
首页 Begell Digital Portal Begell数据库 期刊 图书 电子图书 参考文献及会议录 作者,编辑,审稿 A-Z 产品目录 订购及政策 关于BegellHouse 联系我们 Language English 中文 Русский 日本語 Português Deutsch Français Español