Diagnostics on Steady-State Cross-Flow Arcs,II: Influence of Velocity and Current.

摘要

The influence of parametric variations of through-flow velocity and of arc current upon the local temperature distribution (and associated cross-sectional shape) of a steady-state, 1.1atmosphere Argon cross-flow arc have been determined experimentally. Forced convection,at constant current,exerts profound influence upon the plasma. Isotherm distributions,obtained in a horizontal plane 4.94mm above the anode (electrode spacing = 11.2mm),indicate the pattern changes from that corresponding to the flow about a heated,blunt body (at low speeds) to that about a heated,highly streamlined body (at high speeds). The cross-section is noncircular,with major axis in the direction of flow. (Author)