Thank you sdeb!nHere you are seeing 6 residual curve (3 for vapor, one for continuity, one for k and final one for omega). I check the values for water in console ad it is zero. I have attached two images . I have tried to draw film thickness but not getting any single graph. Will you check the parameters ? I draw the pipe on XY plane and extrude in z direction. I have attached tube with zone for your convenience. I apply liquid mass flux at injection wall by EWF option. Mainly I need to draw wall film thickness of water and mass flow rate of water in annular section.nRegards,nAnadinn