アブレーションアークにおけるチューブ内対称ガス流および密閉室内圧力

抄録

Ablation arcs in a cylindrical tube which has a pressure chamber at one end of it are investigated experimen-tally and theoretically. The experimental data are interpreted by an arc model consisting of four processes which describes the relationship among the pressure distribution in the tube and gas flow in the tube and the pressure in the pressure chamber.
This paper presents theoretical analyses of the gas flow in the tube with symmetrical pressure distribution and of the compressed gas in the pressure chamber. Quasi-steady-state, one-dimensional theoretical solutions are shown, which describe the distribution of temperature, pressure, velocity, density, Mach number and specific enthalpy of the gas in the tube. Theoretical equations are shown also, which describe the time dependence of temperature, pressure and density of the gas in the pressure chamber.
Validity of the solutions describing the states of gas in the tube are shown by the comparison of studies of several authors. Validity of the equations describing the states of gas in the pressure chamber are shown by the comparison of calculated and measured pressure in the pressure chamber. This study revealed the essential features of gas flow within ablation arcs in the cylindrical tube.