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WHAT IS EXACTLY FREE SURFACE FLOW

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Old   March 11, 2006, 07:46
Default WHAT IS EXACTLY FREE SURFACE FLOW
  #1
RASHMI
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DEAR ALL,

I WANTED TO KNOW WHAT EXACTLY MEANS FREE SURFACE FLOW IN DETAIL......

THANKS & REGARDS RASHMI V RAO
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Old   March 11, 2006, 12:35
Default Re: WHAT IS EXACTLY FREE SURFACE FLOW
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Ahmed
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Open channel flows in general, rivers, oceans are good examples
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Old   March 13, 2006, 05:29
Default Re: WHAT IS EXACTLY FREE SURFACE FLOW
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RASHMI
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THNX AHMED

BUT I NEED DO KNOW STILL MORE SPECIFIC AND IN DETAILED FASHION...NOT ONLY EXAMPLES.

COULD ANYONE HELP ME TO KNOW ABT THIS ?

RASHMI V RAO
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Old   March 13, 2006, 19:14
Default Re: WHAT IS EXACTLY FREE SURFACE FLOW
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Dan
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free surface means that the surface motion is unknown of the problem and it is going to be part of the solution. you can set up some boundary condition on the free surface (such as no heat flow) but its motion is going to be determined by the code.
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Old   March 14, 2006, 00:13
Default Re: WHAT IS EXACTLY FREE SURFACE FLOW
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RASHMI
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THNX DAN..... I GOT IT !!!! I WAS BIT UNDER CONFUSION REGARDING THIS ..... NOW GOT CLEARED. THNX A LOT !!!!
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Old   March 14, 2006, 09:58
Default Re: WHAT IS EXACTLY FREE SURFACE FLOW
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KP
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Free surfaces have zero gradients associated with them. A possible way to take this in account is by using a outflow BC in Fluent 6.x series. They are important for jet flow simualtions. If u want to simulate bubble columns and have only air at the top then-degassing bc are used. They are different. Let me know if this helps. KP PS: It would be apprecited if you stop using upper case in forums. Thanks
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Old   March 14, 2006, 17:08
Default Re: WHAT IS EXACTLY FREE SURFACE FLOW
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Dan
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your're welcome.

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Old   March 15, 2006, 01:26
Default Re: WHAT IS EXACTLY FREE SURFACE FLOW
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RASHMI
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Ok KP, I shall avoid using upper case letter 's further. Thnx..For ur answer to my question.

Rashmi V Rao

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