CEL for Interface Curvature
I'm working in a two phase flow simulation and I need to define a CEL function depends on interface curvature. I have looked for this variable in CFX-Pre but I haven't found it, so I think I must to define it. I know interface curvature is define by divergence of normal vector pointing from primary fluid to secondary fluid, but I don't know if is possible (and how) to write this expression.
Thanks in advance
Is it to be calculated during the solution or for post-processing? It should be much easier to do it in post-processing.
I'm using two resistance model for heat transfer between liquid and vapour in stratified two phase flow, so I need to specify interfacial heat transfer coefficient. I need this CEL expression: h=ho*K/Ko, where h is HTC, ho is a referencia value for HTC, K is interface curvature and Ko is a reference value for curvature.
I don't know how (if is possible) write K in CEL.
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