Abstract
We investigate unsteady Laval nozzle flows of water vapor/carrier gas mixtures with self-excited oscillations induced by heat addition after nonequilibrium condensation. In an atmospheric supersonic wind tunnel the 2–D structure and the frequencies of the instabilities are determined by flow visualisation. Three different modes of periodic shock formation can be distinguished. The numerical solution of the two-dimensional time dependent Euler equations coupled with equations for the nucleation and the droplet growth is used to study the interaction of the shock with the homogeneous condensation process. Depending on the relative humidity of the vapor component we found one minimum of the frequency for slender nozzles, whereas two minima exist when curvature effects become important.
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© 1995 Springer Science+Business Media Dordrecht
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Schnerr, G.H., Adam, S., Mundinger, G. (1995). New Modes of Periodic Shock Formation in Compressible Two-Phase Flows. In: Morioka, S., Van Wijngaarden, L. (eds) IUTAM Symposium on Waves in Liquid/Gas and Liquid/Vapour Two-Phase Systems. Fluid Mechanics and its Applications, vol 31. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0057-1_32
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DOI: https://doi.org/10.1007/978-94-011-0057-1_32
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