Analytical and Design Study for a High-Pressure,High-Enthalpy Constricted Arc Heater.

摘要

This report presents a prediction method for high-pressure, high-enthalpy constrictor arc heater performance, the conceptual design of 5 MW and 40 MW arc heaters, and supporting documentation. An existing computer code for arc heater performance was modified by upgrading the radiation model, the thermodynamic and transport properties, and the turbulence model. The radiation properties model was modified to include visible and infrared atomic lines, the ultraviolet continuum, ultraviolet bands and band systems, and ultraviolet atomic lines, while the radiation transport model was modified for an absorbing and emitting gaseous medium. Thermodynamic and transport properties for air covering the pressure range from 1 to 200 atmospheres and the temperature range from 1000K to 30,000K were calculated, and a turbulence model that has been shown to be applicable for developing flows, and that satisfies both wall and centerline boundary conditions, was included.