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
Progress in Plasma Processing of Materials, 2001

ISBN 打印: 1-56700-165-3

MODELING OF TRANSIENT BEHAVIOR OF FREE PLASMA JET

Abstract

Numerical simulation of the Ar plasma jet in the cold N2-02-Ar mixture under atmospheric pressure is performed. The TVD scheme is applied to solve the conservation equations of mass, momentum and energy for a compressible plasma flow. Origination, development and dynamics of the transonic plasma flow exiting the nozzle are studied. Peculiarities of the transition of the plasma jet into the steady-state regime are discussed. It is shown that the initial stage of the development of the transonic plasma jet in air is a complex phenomenon and the transition period into the steady-state mode takes about 20 ms. The effect of short-term variations of velocity and temperature at the nozzle exit on the evolution of gasdynamic fields in the steady-state plasma jet is studied as well. The inlet fluctuations of the above parameters on ± 20% are assumed. It is shown that the variations of temperature and velocity near the nozzle exit don't follow instantly their fluctuations at the inlet. The length of the potential core of the plasma jet is strongly effected by the above fluctuations.
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