Supersaturated Flow on steam nozzles

Write short note on Supersaturated Flow on steam nozzles.

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Supersaturated Flow is also called as metastable flow. When the supersaturated steam gets expanded in the nozzle the condensation occurs in the nozzle. As, the steam has a greater velocity,  the  condensation  does  not  take  place  at  the  estimated  rate.  So the equilibrium state between the liquid and vapour phase gets delayed and the steam gets expanded in a dry state. This Flow of steam expanding is known as supersaturated flow.

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