Shock-Tube Simulation Experiment of Supersonic Condensation Flow Accompanying a Shock Wave,

Abstract : A stationary shock may appear far ahead of the condensing interphase. The existence of similar shock can also be predicted by simple wave theory, if shock wave is considered to reflect on the wall allowed to suck fluid. Such a wall may therefore simulate condensing interphase. From this point of view, we conducted simulation experiment of supersonic condensation flow accompanying a shock wave, by means of a shock tube. The shock tube driven by fast-acting valve enables us to take a series of shadowgraphs at any moments desired. The reflected shock speed slows down for greater amount of suction or for smaller contraction of end wall, and eventually becomes stationary at rest. This critical condition of stationary reflected shock is found to be well predicted by the simple wave theory. In much increase of suction, the shock is swallowed into the end wall.