I am using VOF to modelise a jet plunging into a water tank I initialise all the parameter to default value ( secondary phase(water) fraction volume is set ZERO. I creat a register using : adapt/region/I select the bounsaries of the water volum that i want to patch / I click mark A register named hexahedron-r0 is created

so I do this:

Solve / initialise/ patch/ select hexahedron-r0 + volume fracion of water=1/ I click patch.

theser is no message is given in fluent

In ordrer to check my patched volum I displayed contour/ phases/ water volume fraction : So I see that: all the domaine is water (( all volum fraction of the calcul domain is equal to 1 ))

please help me to find what is wrong

thank you Mr Gernot for your remarks. I check the contour and initialisation as you say but it seems this is not the probleme.

thank you very much in advance

When you mark your region in the adapt panel, fluent tells you how many cells are marked ( for patching later ). Is this number of cells reasonable for your area? You can have a look at your marked area in the adapt/region/manage panel with display. If its possible ( depends on your geometry) i would prefer to mark your zone with adapt/iso-value and (for example) grid y-coordinate. Your way is the right one.