[hm____reza]

Hi all
How can I measure the water depth in a cylinder in the two-phase model in the CFX post?

[ghorrocks]

Define "depth". Where the free surface is along a line? Volume of water? Averaged free surface height on some defined plane?

The volume of water is easy - volumeInt(Water phase)@Domain

[AtoHM]

Create a surface where the phase volume fraction is 0.5. Assuming your z-coordinate is along the vertical axis, you can then get the average z value at your surface and subtract the bottom z coordinate.

[hm____reza]

Originally Posted by AtoHM

Create a surface where the phase volume fraction is 0.5. Assuming your z-coordinate is along the vertical axis, you can then get the average z value at your surface and subtract the bottom z coordinate.

Thank you for your kind answer; I wanted to do it with an expression, not manually

[hm____reza]

Originally Posted by ghorrocks

Define "depth". Where the free surface is along a line? Volume of water? Averaged free surface height on some defined plane?

The volume of water is easy - volumeInt(Water phase)@Domain

Thank you for your kind answer; I wanted to find where the volume fraction is 0.5 in line,
and do it with an expression

[ghorrocks]

The average depth of water is easy: volumeInt(Water phase)@domain/area()@Bottom Surface

Is that useful? If not, please define exactly how you define the depth. There are many ways of measuring the depth. Consider a swimming pool - how deep is it? (It depends on how you measure it)

[AtoHM]

Originally Posted by hm____reza

Thank you for your kind answer; I wanted to do it with an expression, not manually

Thats easily implemented in a function and Glenn already spoiled part of it. You can do this!