Volume Fraction vs Velocity????

May 30, 2006, 16:07

Hello, I've been working with a model of a tank in which water is coming in from the top and getting out trough a pipe.

When I plot the contourn of volume fraction of water, it shows me that the pipe is partially full because the vf of water is zero at about 30% of the pipe's diameter. However, when I plot the contourn of velocity magnitude, it shows me that the pipe is full becouse I have velocity values around the whole diameter. If the volume fraction is zero at any point, how the velocity of that fluid can be more then zero?

Please, tell me any comment or suggestion about it.

I will appreciate your help.

As information: - Inlet BC: Vel.Inlet - Outlet BC:Pressure Outlet - Top of the tank BC: Pressure Outlet

Thanks a lot

Humberto

May 30, 2006, 16:19

mr humberto ,tell me yes if you work with a simulation of tundish chankhar

May 30, 2006, 16:30

No, I'm not working on it.

May 30, 2006, 16:07	Volume Fraction vs Velocity????	#1
HAR Guest Posts: n/a	Hello, I've been working with a model of a tank in which water is coming in from the top and getting out trough a pipe. When I plot the contourn of volume fraction of water, it shows me that the pipe is partially full because the vf of water is zero at about 30% of the pipe's diameter. However, when I plot the contourn of velocity magnitude, it shows me that the pipe is full becouse I have velocity values around the whole diameter. If the volume fraction is zero at any point, how the velocity of that fluid can be more then zero? Please, tell me any comment or suggestion about it. I will appreciate your help. As information: - Inlet BC: Vel.Inlet - Outlet BC:Pressure Outlet - Top of the tank BC: Pressure Outlet Thanks a lot Humberto

May 30, 2006, 16:19	Re: Volume Fraction vs Velocity????	#2
chankhar Guest Posts: n/a	mr humberto ,tell me yes if you work with a simulation of tundish chankhar

May 30, 2006, 16:30	Re: Volume Fraction vs Velocity????	#3
HAR Guest Posts: n/a	No, I'm not working on it.

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