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March 12, 2009, 14:17 |
Simulating air injecting to water in a tank?
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#1 |
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Can any CFD code simulate air injects thru. a tube to water in a tank? I believe this is a problem of fluid interaction or fluid mixing, not multiphase flow.
Thanks, HW |
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March 12, 2009, 17:06 |
Re: Simulating air injecting to water in a tank?
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#2 |
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Have a look here - is this what you are after?
http://powerlab.fsb.hr/ped/kturbo/Op...pipeInTank.mpg This is pretty straightforward 2-phase VOF stuff with a reasonably coarse mesh. Hrv |
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March 12, 2009, 18:26 |
Re: Simulating air injecting to water in a tank?
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#3 |
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It is almost there. Additionally pressure loss in air injection may be interested for me.
Thank you very much, Hrvoje HW |
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March 12, 2009, 19:08 |
Re: Simulating air injecting to water in a tank?
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#4 |
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your water level should rise right after the start of injection because of volume displacement. It does not seem your code is conserving liquid mass...
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March 13, 2009, 03:10 |
Re: Simulating air injecting to water in a tank?
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#5 |
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The water level rises correctly - it's just that the tank has got a z-direction which is larger than what you see in the movie. The code is (of course) fully mass and momentum conservative - it would be quite difficult to write an FVM discretisation that does not conserve mass properly.
There is also a set of experimental comparison data for this case, if you are interested... Hrv |
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March 13, 2009, 03:24 |
Re: Simulating air injecting to water in a tank?
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#6 |
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Let me guess: author with invalid E-mail address, using anonymous relay for posting. Please say Hello to Paul from me.
Hrv |
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March 13, 2009, 22:32 |
Re: Simulating air injecting to water in a tank?
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#7 |
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Fact No 1: A good number of readers of this forum are interested and willing to run OpenFoam on their computers.
Fact No 2: A good number of them cannot even install the programme not to mention run it, for different reasons. I think there are more negative than positive opinions about OpenFoam. I guess it would be wise to see why there are angry opinions. Anyway, I wish not to read harsh sarcastic replies. FYI I was able to install and run the programme, but I am not able to finish the first tutorial, I can display the mesh but not the scalar pressure field neither the vectorial velocity field and I do not know why, is there something missing or wrong with my installation, or may be I am not following the correct procedure |
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