摘要
The gasdynamic and electromagnetic factors affecting the position of arc roots in a tubular arc heater are analyzed.Magnitudes of the various factors are estimated through numerical modelling,and the overall action on the arc assessed.It is found that the actions on the arc in the rear electrode can be balanced in a stable manner and the arc root can be stabilized at a certain axial position.In the front electrode,the various factors cannot be balanced,and the are root can only stay within the electrode through the mechanism of recurrent shunting.These conclusions agree with experimental observations.
The gasdynamic and electromagnetic factors affecting the position of arc roots in a tubular arc heater are analyzed.Magnitudes of the various factors are estimated through numerical modelling,and the overall action on the arc assessed.It is found that the actions on the arc in the rear electrode can be balanced in a stable manner and the arc root can be stabilized at a certain axial position.In the front electrode,the various factors cannot be balanced,and the are root can only stay within the electrode through the mechanism of recurrent shunting.These conclusions agree with experimental observations.
基金
The project supported by National Natural Science Foundation of China
