It is well known that the release of latent heat by a homogeneously nucleating steam flow can have a strong effect on the flow dynamics and this is particularly true if the flow is transonic or supersonic with shock waves present. Most research has been aimed at calculating the overall flow behaviour but equally important is the effect of the shocks on the nucleation process itself and the resulting droplet size distribution. This paper explores the shock-nucleation interaction process in a pure steam flow and shows how the downstream droplet size distribution can be affected by the presence of shocks in both steady and unsteady flow.
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