1989•TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series BOpen access

Interaction of a condensation shock wave with an oblique shock wave in a supersonic nozzle.

Shigetoshi Kawagoe, Shigeru Matsuo, Toshiaki Setoguchi, Mitsuhiro FUKUNAGA, Akihiko Masu, Kazuyasu MASU

Abstract

When condensation occurs in a blade passage in a steam turbine, a condensation shock wave appears and interacts with a boundary layer on a blade surface or an oblique shock wave which originates from the trailing of the blade. In the present study, a condensing flow with a condensation shock wave was produces by a expansion of moist air in a supersonic circular nozzle, and by inserting a wedge-type shock generator in the supersonic part of the nozzle, the interactions of the condensation shock wave with the oblique shock wave were investigated experimentally. The interaction patterns are discussed ant are explained qualitatively. The change of shape of the oblique shock wave by the interaction is clarified quantitatively.

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Available abstract

Key concepts: Oblique shock, Shock wave, Supersonic speed, Shock (circulatory), Mechanics, Moving shock, Condensation, Boundary layer