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-   -   Tutorial to help tank sloshing modelling (CFX 12.1) (http://www.cfd-online.com/Forums/cfx/82386-tutorial-help-tank-sloshing-modelling-cfx-12-1-a.html)

enghamed November 24, 2010 20:27

Tutorial to help tank sloshing modelling (CFX 12.1)
 
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

nelly December 6, 2010 07:16

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

ghorrocks December 6, 2010 07:36

The free surface flow over a bump tutorial simulation is the best tutorial on free surface flows.

Haga December 23, 2010 11:33

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??

ghorrocks December 23, 2010 21:31

Look in the CFX tutorials. The "Flow over a bump" one shows how to set up free surface flows.

Haga December 24, 2010 20:39

ok, will try


Thanks

enghamed January 4, 2011 19:02

Quote:

Originally Posted by Haga (Post 288299)
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

Haga January 4, 2011 20:06

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.

ekowp February 22, 2011 05:14

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

leuvadhawal March 5, 2011 18:53

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

putexx August 9, 2011 00:09

Sloshing and global motion
 
how to synchronize motion of ship and sloshing??
i am confused about that..
any one can help me???

Haga August 20, 2011 20:39

Quote:

Originally Posted by leuvadhawal (Post 298067)
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

mauricio August 21, 2011 18:07

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.

Haga August 21, 2011 20:43

Quote:

Originally Posted by mauricio (Post 320929)
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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