Time Accurate Simulation of Nonequilibrium Flow inside the NASA Ames Electric Arc Shock Tube

[摘要] Numerical investigations of the ow field inside NASA Ames' Electric Arc Shock Tube have been performed. The focus is to simulate the experiments designed to reproduce shock layer radiation layer relevant to Earth re-entry conditions. This paper assess the current computational capability in simulating unsteady nonequilibrium flows in the presence of strong shock waves with state-of-the-art physical models. The technical approach is described with preliminary results presented for one specific ow condition. The numerical problems encountered during the computation of these flows are detailed, along with the methods used to resolve them. Post-shock conditions are discussed and compared to CEA equilibrium prediction.

[发布日期] 2019-10-07

[学科分类] 力学，机械学

[关键词] NONEQUILIBRIUM FLOW;UNSTEADY FLOW;TIME DEPENDENCE;NUMERICAL FLOW VISUALIZATION;NUMERICAL ANALYSIS;SHOCK TUBES;ELECTRIC ARCS;SHOCK TESTS;AEROTHERMODYNAMICS;COMPUTATIONAL FLUID DYNAMICS;HYPERSONICS