Mass Transfer UDF using Fluent VOF -- CFD Online Discussion Forums

February 7, 2011, 15:10	Mass Transfer UDF using Fluent VOF	#1
Anirudh_Deodhar New Member Andeo Join Date: Jun 2010 Location: Pune, India Posts: 12 Rep Power: 15	Hello, I am studying air bubble dynamics from a submerged orifice in pool of aqueous soln of surfactants. As surfactant molecules adsorb and desorb on the moving bubble interface, I need to put a concentration boundary condn on the moving interface. (need to specify a specific concentration function on the bubble interface). As I am using VOF module in Fluent 12, my question is, can I specify a concentration BC on the moving bubble interface? How do I limit my concetration BC equation to region where volume fraction is between 0 to 1? Can I write a UDF for the same?

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