Nusselt Number -- CFD Online Discussion Forums

December 20, 2018, 23:25	Nusselt Number	#1
oliveira1820 Senior Member Pedro Oliveira Join Date: Feb 2018 Location: Portugal Posts: 109 Rep Power: 8	The documentation of ANSYS CFX recommends that for superheated steam in subcooled liquid, the user defines Nusselt number about 6 on the dispersed phase (steam). How can I know the best Nusselt number for my application? Basically it consists in water and steam transient flow, with a continuous heat deposition, with Thermal Phase Change Ranz Marshall on cointinuos water phase)(Nusselt number=6 on gas phase) modelling the interphase mass and heat transfer., cooled by surrounding water cooling with 1.8Kg/s (30 cm size recipient - 1000W) Ahmed Fakhrey likes this.

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