Abstract
The 1-D asymptotic theory of transonic nozzle flows with homogeneous condensation is applied to both subcritical and supercritical moist air expansions under atmospheric supply conditions through relatively slender nozzles. Good agreement with experiments is achieved for sufficiently low initial relative humidity in subcritical and high initial relative humidity in supercritical flows when the condensed phase is taken to consist purely of water drops. In near critical flows where the initial relative humidity ranges in between and the flow borders on supercritical heat addition, regardless of nozzle geometry the 1-D asymptotic theory predicts deviations from the onset of condensation and, in case of flows with normal shocks, from the visualized shock locations due to the 2-D nature of the flow field.
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