open channel flow with obstacle !!!

opard · May 10, 2011, 14:06

I am a new foamer and learning about various case tutorial.
I want open channel flow with obstacle 2D (interFoam solver) tutorial or code file (laminar and turbulent).
I have a problem with a velocity inlet profile too.
please help me. T_T

armiepoko@hotmail.com

The King · May 10, 2011, 14:47

Hi!

I'm trying the same as you but did not found how to make an inlet profile. I used a long inlet to let the flow develop. But I did not get a proper hydraulic jump. If you manage, let me know!

Logan Page · May 10, 2011, 15:16

Search the forums for inlet velocity profile, it seems to have been discussed quite a few times.

The King · May 11, 2011, 08:36

Hi,

you are right for the parabolic profile. For an open channel flow, you need profile from a developed boundary layer to the free stream velocity. Did you find that as well on the forum?

Regards!

longamon · May 13, 2011, 07:30

For the inlet velocity try groovyBC, this will allow you to use functions to set the entry conditions. see this:

http://www.cfd-online.com/Forums/ope...-groovybc.html

May 10, 2011, 14:06	open channel flow with obstacle !!!	#1
opard New Member art Join Date: Apr 2011 Posts: 2 Rep Power: 0	I am a new foamer and learning about various case tutorial. I want open channel flow with obstacle 2D (interFoam solver) tutorial or code file (laminar and turbulent). I have a problem with a velocity inlet profile too. please help me. T_T armiepoko@hotmail.com

May 10, 2011, 14:47	open channel flow with obstacle !!!	#2
The King Member Arnout Join Date: Nov 2010 Posts: 46 Rep Power: 16	Hi! I'm trying the same as you but did not found how to make an inlet profile. I used a long inlet to let the flow develop. But I did not get a proper hydraulic jump. If you manage, let me know!

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May 10, 2011, 15:16		#3
Logan Page Member Logan Page Join Date: Sep 2010 Posts: 38 Rep Power: 16	Search the forums for inlet velocity profile, it seems to have been discussed quite a few times.

May 11, 2011, 08:36		#4
The King Member Arnout Join Date: Nov 2010 Posts: 46 Rep Power: 16	Hi, you are right for the parabolic profile. For an open channel flow, you need profile from a developed boundary layer to the free stream velocity. Did you find that as well on the forum? Regards!

May 13, 2011, 07:30		#5
longamon Member David Aljure Join Date: Mar 2011 Location: CTTC Universidad Politécnica de Catalunya. Spain Posts: 38 Rep Power: 15	For the inlet velocity try groovyBC, this will allow you to use functions to set the entry conditions. see this: http://www.cfd-online.com/Forums/ope...-groovybc.html