Title: Two-dimensional modelling of a DC arc plasma furnace with opposite cathode and anode

Authors: Gui-Qing Wu, He-Ping Li, Cheng-Yu Bao, Xi Chen, Toru Iwao, Motoshige Yumoto, Tsuginori Inaba

Addresses: Department of Engineering Physics, Tsinghua University, Beijing 100084, PR China. ' Department of Engineering Physics, Tsinghua University, Beijing 100084, PR China. ' Department of Engineering Physics, Tsinghua University, Beijing 100084, PR China. ' Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China. ' Musashi Institute of Technology, 1-28-1 Tamazutsumi, Setagaya, Tokyo 158-8557, Japan. ' Musashi Institute of Technology, 1-28-1 Tamazutsumi, Setagaya, Tokyo 158-8557, Japan. ' Chuo University, 1-13-27 Kasuga, Bunkyo, Tokyo 112-8551, Japan

Abstract: A two-dimensional modelling is conducted concerning the effects of the arc current and the cathode-anode distance on the heat transfer and flow patterns inside a DC arc plasma furnace with opposite cathode and anode and with opposite working-gas injection. The modelling results show that a stagnation layer with zero axial velocity is formed between the cathode and anode when an appropriate parameter combination is employed. The position of the stagnation layer moves toward the anode side with increasing arc current. And the gas temperature at the stagnation point increases with increasing arc current or decreasing cathode-anode distance.

Keywords: two-dimensional modelling; 2D modelling; C arc; plasma furnaces; heat transfer; arc current; cathode-anode distance; flow patterns.

DOI: 10.1504/PCFD.2008.021318

Progress in Computational Fluid Dynamics, An International Journal, 2008 Vol.8 No.7/8, pp.424 - 431

Published online: 19 Nov 2008 *

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