Abstract
The self-similar solution of an unsteady rarefaction wave in a gas-vapour mixture with condensation is investigated. If the onset of condensation occurs at the saturation point, the rarefaction wave is divided into two zones, separated by a uniform region. If condensation is delayed until a fixed critical saturation ratio X c > 1 is reached, a condensation discontinuity of the expansion type is part of the solution. Numerical simulation, using a simple relaxation model, indicates that time has to proceed over more then two decades of characteristic times of condensation before the self-similar solution can be recognized. Experimental results on heterogeneous nucleation and condensation caused by an unsteady rarefaction wave in a mixture of water vapour, nitrogen gas and chromium-oxide nuclei are presented. The results are fairly well described by the numerical relaxation model. No plateau formation could be observed.
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© 1990 Springer-Verlag Berlin Heidelberg
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Smolders, H.J., Niessen, E.M.J., van Dongen, M.E.H. (1990). On the Similarity Character of an Unsteady Rarefaction Wave in a Gas-Vapour Mixture with Condensation. In: Meier, G.E.A., Thompson, P.A. (eds) Adiabatic Waves in Liquid-Vapor Systems. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-83587-2_17
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DOI: https://doi.org/10.1007/978-3-642-83587-2_17
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