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Tutorial to help tank sloshing modelling (CFX 12.1)

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Old   November 24, 2010, 20:27
Default Tutorial to help tank sloshing modelling (CFX 12.1)
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Hamed
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Dear Friends,

I need to model tank sloshing. I want some tutorials tahat could help me on this modeling. I'm using ANSYS CFX 12.1


Thanks for all your help
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Old   December 6, 2010, 07:16
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Nelly
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Hi Hamed,

I dont know if there is a tutorial for this.

May be I can help you with some stuff.

post your questions.

I try my best to reply them.

Thanks
Nelly
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Old   December 6, 2010, 07:36
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Glenn Horrocks
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The free surface flow over a bump tutorial simulation is the best tutorial on free surface flows.
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Old   December 23, 2010, 11:33
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Hareesh R Iyer
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Hi all, am new to cfd-online.
I also am trying to develop the cfd model of liquid slosh in a tank (shape not specific). I would like to do this in Ansys CFX. I just need the CFX part of the work & I am able to model the geometry & mesh it using moving-mesh technique which is I think the most suitable mesh form. I am pretty unsure of how to do the CFX part because no tutorial or data I got from internet speaks about slosh modeling.
Any cfd-specialist can help me??
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Old   December 23, 2010, 21:31
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Glenn Horrocks
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Look in the CFX tutorials. The "Flow over a bump" one shows how to set up free surface flows.
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Old   December 24, 2010, 20:39
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ok, will try


Thanks
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Old   January 4, 2011, 19:02
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Quote:
Originally Posted by Haga View Post
Hi all, am new to cfd-online.
I also am trying to develop the cfd model of liquid slosh in a tank (shape not specific). I would like to do this in Ansys CFX. I just need the CFX part of the work & I am able to model the geometry & mesh it using moving-mesh technique which is I think the most suitable mesh form. I am pretty unsure of how to do the CFX part because no tutorial or data I got from internet speaks about slosh modeling.
Any cfd-specialist can help me??
Dear Haga,

Can you please help me how should I apply the moving mesh? What kind of equation should I specify for the moving mesh?

Regards
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Old   January 4, 2011, 20:06
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i am studying that now. anyways it has to be done using the VoF method for satisfactory results. i'll post here on how the mesh is made dynamic soon.
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Old   February 22, 2011, 05:14
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Eko Wahyu
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hay if you has link or file pdf about modelling sloshing.... please upload them
that great idea to make our tutorial so we can easy to get tutorial on future
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Old   March 5, 2011, 18:53
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Dhawal Leuva
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Hey, Hareesh, I have been working on fuel slosh simulation using CFX for my thesis. I am working on developing active damping mechanism for fuel slosh. I have been able to simulate fuel slosh without providing moving mesh. Volume fraction is the important factor for obtaining free surface. However, I cant figure a way of measuring the amplitude of fuel slosh in my simulation. Can any one suggest a way to obtain the amplitude of the sloshing in CFX.

Thanks
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Old   August 9, 2011, 00:09
Default Sloshing and global motion
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how to synchronize motion of ship and sloshing??
i am confused about that..
any one can help me???
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Old   August 20, 2011, 20:39
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Hareesh R Iyer
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Quote:
Originally Posted by leuvadhawal View Post
Hey, Hareesh, I have been working on fuel slosh simulation using CFX for my thesis. I am working on developing active damping mechanism for fuel slosh. I have been able to simulate fuel slosh without providing moving mesh. Volume fraction is the important factor for obtaining free surface. However, I cant figure a way of measuring the amplitude of fuel slosh in my simulation. Can any one suggest a way to obtain the amplitude of the sloshing in CFX.

Thanks
Yes, thanks, I did simulate lateral sloshing without moving mesh. Use isosurface to calculate amplitude. Use function calculator for finding max & min X & Y values to get slosh angle & amplitude
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Old   August 21, 2011, 18:07
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Mauricio Labarca
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There's are some ansys 12 tutorial slides with a transitory case with tank sloshing somewhere... also, for the free surface it's common to assume that the isosurface where the volume fraction is 0.5 is the water/fluid surface.
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Old   August 21, 2011, 20:43
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Quote:
Originally Posted by mauricio View Post
There's are some ansys 12 tutorial slides with a transitory case with tank sloshing somewhere... also, for the free surface it's common to assume that the isosurface where the volume fraction is 0.5 is the water/fluid surface.
hello, setting the isosurface with volume fraction depends on the liquid fill level required. I didn't see any slosh specific slide in ANSYS 12 tutorials, will check it again
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