Abstract
In this paper, the effects of the passive technique using the slotted wall with cavity on the characteristics of a steady condensation shock wave generated in a Prandtl-Meyer flow were investigated experimentally. Furthermore, in order to clarify the variation of condensate properties in the flow field, Navier-Stokes equations were solved numerically using a 3rd-order MUSCL type TVD finite-difference scheme. From experimental results, it was found that the strength of steady condensation shock wave in case with passive control using the slotted wall with cavity was suppressed in comparison with no passive case (solid wall), and the present passive technique was the most effective when a foot of the condensation shock wave was located at the middle of slotted wall. Furthermore, the unsteady condensation shock wave in the Prandtl-Meyer expansion fan was simulated and it was confirmed numerically that the passive technique was also effective for controlling of an unsteady condensation shock wave.
