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modeling spilling of water from a tank

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Old   June 21, 2006, 03:05
Default modeling spilling of water from a tank
  #1
jemteo
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I'd like model the filling of a rectangular tank and due to a crack, water is expelled from the tank onto the floor.

i can model and simulate water filling the tank, how do i model the expellling of water on the floor and the flow after that?

any advise is very much appreciated
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Old   June 21, 2006, 07:31
Default Re: modeling spilling of water from a tank
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Joe
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i can model and simulate water filling the tank, how do i model the expellling of water on the floor and the flow after that?

In exactly the same way ... just continue your geometry over the tank edge, down the tank exterior wall and onto the surrounding floor...
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Old   June 21, 2006, 20:02
Default Re: modeling spilling of water from a tank
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jemteo
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can i just create my tank mesh and then say mesh that represents an entire room and then use interface in CFX to ensure they are joined?

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Old   June 22, 2006, 23:50
Default Re: modeling spilling of water from a tank
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James
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Hi,jemteo

I am sorry I cann't give you some help.Can you give me some advices on filling tank simulation?

I want to simulate such a tank filling:

the inlet of the vessel is at the bottom,without outlet,and filled with air at 5000Pa.

the liquid flow into it by the pressure of 0.5MPa. How should I set the domain and boundary conditions? Homogeneous Multiphase?

Good luck to you! Regurds,James
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Old   June 23, 2006, 00:42
Default Re: modeling spilling of water from a tank
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Rajit
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Hi James

Use the Volume over fraction model.Initialize the model with 100% air and 0% water.

Regards

Rajit
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Old   June 23, 2006, 20:10
Default Re: modeling spilling of water from a tank
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James
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Hi,Rajit

I did just as you said. But how do I know the filling is good? From the streamline?

By the way,How can I get the Animation of water flow? can you give me some advice in detail ?I know how to use the animate,but cannot solve this situation. Regards,

James
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Old   June 25, 2006, 19:33
Default Re: modeling spilling of water from a tank
  #7
Rajit
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Use the various time steps of the transient simulation to animate the spilling.

Regards

Rajit

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