The boundary condition for the countercurrent

November 23, 2004, 03:00

Hi There are two kind fluids (liquid and gas) in my system and the system is the countercurrent. The gas phase inputs at the bottom boundary of the geometer and leaves at the top boundary. The liquid inputs at the top boundary and leaves at the bottom.

Question 1 If the top bounady is set the inlet, can i use UDF to interpret that the gas phase can pass through the top boundary ? What macros I need use ?

Question 2 If the bottom boundary is set the outlet, can i use UDF to restrict that the gas phase can't pass through the bottom boundary but the liquid can pass ? What macros I need use ?

thank you

fcabrales · April 11, 2011, 20:59

Hi Gali!

were you able to set up the boundary conditions for your simulation? I am having the same problem as you.

I really appreciate your help.

KOX · September 2, 2011, 08:22

If both of you resolved this problem please shere it with me. I have the same problem. Thanh you in advance.

November 23, 2004, 03:00	The boundary condition for the countercurrent	#1
Gali Guest Posts: n/a	Hi There are two kind fluids (liquid and gas) in my system and the system is the countercurrent. The gas phase inputs at the bottom boundary of the geometer and leaves at the top boundary. The liquid inputs at the top boundary and leaves at the bottom. Question 1 If the top bounady is set the inlet, can i use UDF to interpret that the gas phase can pass through the top boundary ? What macros I need use ? Question 2 If the bottom boundary is set the outlet, can i use UDF to restrict that the gas phase can't pass through the bottom boundary but the liquid can pass ? What macros I need use ? thank you

September 2, 2011, 08:22	Question	#3
KOX New Member PAWEŁ Join Date: Apr 2011 Location: Poland Posts: 5 Rep Power: 15	If both of you resolved this problem please shere it with me. I have the same problem. Thanh you in advance.

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April 11, 2011, 20:59		#2
fcabrales New Member Fredy Cabrales Join Date: Jan 2010 Posts: 15 Rep Power: 16	Hi Gali! were you able to set up the boundary conditions for your simulation? I am having the same problem as you. I really appreciate your help.