Flow and temperature fields in the fireball of an inductively coupled plasma
Abstract
A mathematical model is presented for the calculation of the twodimensional flow and temperature fields in an inductively coupled plasma. The model is based on the simultaneous solution of the corresponding momentum, continuity, and energy equations and the onedimensional magnetic and electricfield equations. Results were obtained for a plasma torch with a fourturn induction coil. Calculations were made for argon under atmospheric pressure at a power level of 3.77 KW with different plasma gasflow rates over the range from 5 to 25 gm/min. The results clearly demonstrate the existence of the magnetic pumping effect which is responsible for the formation of two recirculation eddies, one at each end of the coil. As the plasma gasflow rate is increased, the downstream eddy is swept away, leaving only one recirculation eddy on the upstream side of the fireball. This eddy produces a back flow of the order of 20 m/s. Increasing the plasma gasflow rate is also observed to cause a substantial reduction of the heat flux to the plasmaconfining tube.
 Publication:

IEEE Transactions on Plasma Science
 Pub Date:
 March 1976
 DOI:
 10.1109/TPS.1976.4316928
 Bibcode:
 1976ITPS....4...28B
 Keywords:

 Fireballs;
 Magnetic Induction;
 Magnetohydrodynamic Flow;
 Plasma Control;
 Temperature Distribution;
 Two Dimensional Flow;
 Electric Fields;
 Flow Distribution;
 Flow Velocity;
 Gas Flow;
 Magnetic Fields;
 Magnetic Pumping;
 Mathematical Models;
 Plasma Physics