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Old   February 16, 2006, 08:10
Default slug flow
  #1
shu ming
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just want to ask is anyone has done any research or tutorial on slug flow by using FLUENT?
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Old   February 16, 2006, 21:56
Default Re: slug flow
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Paul_C
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Hello,

I am also doing simulation on slug flow using Fluent. However i am still trying.

Hope that we can help each other.

Regards
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Old   February 17, 2006, 00:33
Default Re: slug flow
  #3
shu ming
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actually, i'm a new user of Fluent.Absolutely know nothing about this software. I wish to know the settings in this case. Hope someone can help.
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Old   February 17, 2006, 06:38
Default Re: slug flow
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sumedh
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For doing slug flow analysis, you will need to do unsteady analysis, VOF of fluid method is good for slug simulation. Does anyone have idea of slug catcher ?
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Old   February 17, 2006, 07:07
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Paul_C
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I am also using VOF for slug simulation.

However was unable to get satisfactory results

Can anyone help?

What is a slug catcher?
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Old   February 17, 2006, 10:41
Default Re: slug flow
  #6
shu ming
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thanks sumedh.i'm using VOF too. Maybe left out some settings. And by the way, what is courant number?
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Old   February 17, 2006, 10:43
Default Re: slug flow
  #7
Paul_C
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I have kept it at 0.25.

Are you also simulating slug flow?
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Old   February 17, 2006, 12:28
Default Re: slug flow
  #8
shu ming
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yes. this is my first undergraduate project.My first testing was failed. As i said before, I might left out something. So I really need some help.
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Old   February 19, 2006, 11:31
Default Re: slug flow
  #9
Paul_C
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did you add in surface tension? what is the boundary conditions and initial conditions u have used? do you have any readings or tutorial regarding slug flow simulation?
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Old   February 19, 2006, 12:45
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  #10
shu ming
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i can't remember the value of surface tension. is there any empirical value for that? i've used gas inlet velocity and outlet pressure as my boundary conditions.
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Old   February 20, 2006, 00:44
Default Re: slug flow
  #11
Paul_C
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There should be experimental data for that. i think you can go search journal for the value.

When using VOF, the meshing is very important.

If you come across any good journal on slug flow please let me know cos i also needs them thanks.

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Old   February 23, 2006, 22:37
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  #12
shu ming
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i'm facing problem with the animation. i can't see the air flows in. so how?
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Old   February 25, 2006, 13:16
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  #13
Paul_C
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what do you mean?

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Old   February 25, 2006, 22:33
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shu ming
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i can't see any volume fraction for the air in the animation, meaning the whole column is water. so i wonder what is the error. can someone show me how to set the animation? and i wish to know what is the optimum velocity for the inlet gas. thanks.
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Old   February 26, 2006, 03:18
Default Re: slug flow
  #15
Paul_C
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did u include the bubble into the computational domain? if not how are you going to see air fraction inside?
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Old   February 26, 2006, 07:08
Default Re: slug flow
  #16
shu ming
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how to do it?
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