Convective and Radiative heat transfer in Free surface modelling in solidification -- CFD Online Discussion Forums

July 9, 2017, 15:17	Convective and Radiative heat transfer in Free surface modelling in solidification	#1
Tushar_Telmasre Member sebastian bergman Join Date: Mar 2017 Location: seattle Posts: 52 Rep Power: 9	I am trying to model solidification in an ingot. I am using a multiphase model with air and molten metal. I need to define the top surface as a free surface thus i did define the top surface as a pressure outlet boundary condition with 0 gauge pressure. but now i need to define certain thermal boundary conditions also, such as convective and radiative heat loss from top of the melt. There isn't any option regarding that in fluent. what can i do in this case? Do i have to write a udf for that? Last edited by Tushar_Telmasre; July 9, 2017 at 15:18. Reason: incorrect title

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