Vapor Condensation Behind a Shock Wave Propagating Through Vapor-liquid Two-Phase Media
Vapor condensation behind a shock wave propagating through two-phase media with excessively large void fraction (vapor to liquid volume ratio) was investigated experimentally by using shock tube facility. A flow field of such media revealed itself largely different from that of pure gases in the process of attaining thermal equilibrium condition. In the former shock intensities P2/P1 realized are much weaker, and larger heat energy are transferred to the tube wall in the form of condensates. A series of investigations including schlieren photographs with the aid of high-speed drum camera illustrate a sequential change of generation, growth and evaporation of fluid condensates in the flow field. These imply that the phase change phenomenon caused by thermo-fluid dynamic behavior plays an important role in such flow field immediately after the shock. The relaxation time of the vapor flow behind a shock wave is in orders of magnitude longer than that predicted by one-dimensional analyses based on kinetic theory.
KeywordsCombustion Acetone Benzene Attenuation Tungsten
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- 2.Marble, F.E.: Some Gasdynamics Problems in the Flow of Condensing Vapors, Astro.Acta, Vol. 14 (1969), 585–613Google Scholar
- 5.Lu, H.Y. and Chiu, H.H.: Dynamics of Gases Containing Evaporable Liquid Droplets under a Normal shock, AIAA J., (1966), 1008–1011Google Scholar
- 8.Thompson, P.A., Kim, Y.-G., Meier, G.E.: Shock-Tube Studies with Insident Liquefaction Shocks, Proc. 14th Shock Tubes and Waves, (1984), 413–420Google Scholar