VoF model, two phases, but only able to show velocity of the phase "mixture"?
Hi all
I'm working on a simple simulation where two immiscible liquid flows in a pipe. I'm using VoF model with two phases (both liquid, immiscible, properties separately defined, surface tension force modelling enabled). When I was trying to check some results, the volume fraction contours of both phases shows fine. However the contours or vectors of velocity can only choose the phase "mixture" instead of my two phases in the "phase" drop-down list. Why is this? Many thanks |
VOF model calculates only one velocity field, that of the mixture. So both phases share the same velocity.
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Here is the way that you need to follow in CFD Post: - Expressions- New- phase2 volume fraction * velocity (In order to avoid typo you can choose different parameters by right clicking in free area) - variables- new - select expression that you made in previous step Now you will see that you have new variables that only shows your phase2 velocity. |
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You cannot get phase 2 velocity as you solved a shared velocity field to begin with. |
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you are telling cfd post to show you only on of the velocities. It doesn't have anything to do with solution method and calculation processes. |
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But my point is, would that be a representation of phase 2 velocity or not? |
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give it a try and you will see the results. Cheers. |
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