interFoam: bleeding at inlet
This is reported by student of Exeter university
i)channel2D/3D case : run fine with 1612 but show bleeding of alpha at inlet
which then propagate in domain, in OF-1706 onwards version. alpha at inlet is zero gradient in default case set up . It looks zeroGradient BC at inlet causes bleeding after OF . version 1612+ . Can you have a look into it ?
See attached pdf file volumeFraction_Bleeding_2DChannel.pdf
2D cases attached here : channel_2D.zip
3D cases attached here
ii) Suggested bc to avoid this bleeding using variableFlowRateHeight or interFaceCompression avoid bleeding at inlet and domain.