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WHICH MODEL TO USE???????????

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Old   October 16, 2005, 23:23
Default WHICH MODEL TO USE???????????
  #1
Rashmi
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hi all iam simulating oil n water mixture..in a horizontal pipe..the flow is turbulent..i want to find the fluid flow characteristics of dispersed flow... which model is suitable for this kind of application...can any one suggest me...can i use VOF model????

any suggestions is highly appreciated

thanks in advance Rashmi
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Old   October 17, 2005, 04:16
Default Re: WHICH MODEL TO USE???????????
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pUl|
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Eulerian. I've done it before. Use very very low URFs (say around 0.2 for most quantities). Also perform only transient simulations.
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Old   October 18, 2005, 02:07
Default Re: WHICH MODEL TO USE???????????
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Rashmi
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so can eularian model can simulate the turbulent flows...

can u send me the report we u have done any work using eularian... i will be very much thank ful to u if u could do that.. thanks Rashmi
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Old   October 18, 2005, 02:10
Default Re: WHICH MODEL TO USE???????????
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pUl|
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What is it that you exactly need; what kind of "report" are you referring to?
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Old   October 18, 2005, 03:35
Default Re: WHICH MODEL TO USE???????????
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Rashmi
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hi

you said u have used eularian model b4...so is their any report u have made of ur work..

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Old   October 18, 2005, 03:45
Default Re: WHICH MODEL TO USE???????????
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pUl|
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No, I have made no reports on the usage of the Eulerian model. However, if you will take the time to explain the problem you are facing, I might be able to help.

Your earlier statement "...so can eularian model can simulate the turbulent flows..." suggests that you have some confusion in understanding that the eulerian model is a multiphase model in contrast to other models such as the k-e model which are turbulence models. The Eulerian model by itself does not account for turbulence. Activating the k-e model includes a turbulent stress term in the governing equations of the eulerian model which simulates turbulence. In summary, the Eulerian model can be used in conjunction with the k-e turbulence model to account for turbulence in multiphase flows.
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Old   October 19, 2005, 06:31
Default Re: WHICH MODEL TO USE???????????
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MANOJKUMAR
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Hi i suggested to do VOF model because it is only used for two fluid and u said that u mixing the two fluid in a pipe then VOF is best model for that i doing VOF model for slidin g a sheet in a fluid and using VOF model.any problem then send whole detailed on ms_project05@rediffmail.com
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