Open channel flow

motaba · March 20, 2011, 15:54

Hello. Can you help me in the open channel? problem is that you see on the picture below the channel has an input and output. geometry there is no problem. The water temperature of 3 degrees at the entrance channel and the ambient air temperature and the temperature of the channel walls of the exit channel is how many degrees? Does freezing Do not want to see it. There is a certain rate of water etc. could not make; fluent in CFX or open channel flow boundary condition that there is a how we will show you how to do please help. or Is there a tutorial or an example like that in your hand. Thank you all in advance. Regards.

mogoko · March 21, 2011, 03:27

hi,
it seems that there's a tutorial using free surface model in CFX help.
btw, you need another mesh of ambient air

motaba · March 22, 2011, 06:02

how can i do it?

mogoko · March 22, 2011, 11:09

you should mesh an air mesh big enough that the temperature and flow will not influence its outer boundary condition any more.
as to the free surface model, you can refer to the tutorial

motaba · March 26, 2011, 03:22

thanks you

March 20, 2011, 15:54	Open channel flow	#1
motaba New Member motaba tekefe Join Date: Mar 2011 Posts: 3 Rep Power: 14	Hello. Can you help me in the open channel? problem is that you see on the picture below the channel has an input and output. geometry there is no problem. The water temperature of 3 degrees at the entrance channel and the ambient air temperature and the temperature of the channel walls of the exit channel is how many degrees? Does freezing Do not want to see it. There is a certain rate of water etc. could not make; fluent in CFX or open channel flow boundary condition that there is a how we will show you how to do please help. or Is there a tutorial or an example like that in your hand. Thank you all in advance. Regards.

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March 21, 2011, 03:27		#2
mogoko New Member Neil Yang Join Date: Mar 2011 Posts: 6 Rep Power: 14	hi, it seems that there's a tutorial using free surface model in CFX help. btw, you need another mesh of ambient air

March 22, 2011, 06:02		#3
motaba New Member motaba tekefe Join Date: Mar 2011 Posts: 3 Rep Power: 14	how can i do it?

March 22, 2011, 11:09		#4
mogoko New Member Neil Yang Join Date: Mar 2011 Posts: 6 Rep Power: 14	you should mesh an air mesh big enough that the temperature and flow will not influence its outer boundary condition any more. as to the free surface model, you can refer to the tutorial

March 26, 2011, 03:22		#5
motaba New Member motaba tekefe Join Date: Mar 2011 Posts: 3 Rep Power: 14	thanks you