Boundary condition in capillary rise

kumar.kyutech · August 12, 2022, 11:31

Hi, I am trying to simulate capillary rise in a channel. My channel consists of a small channel inside the bigger channel (see the figure).

Capture.jpg

As you can see the surface contact angle at the top and bottom walls of the channel is showing correctly but when the fluid is passing through the smaller channel, the wall effect is not showing.

I have given the same wall condition to the smaller channel and bigger channel.

Can someone tell me what could be going wrong?

MarcusAng · July 7, 2023, 12:52

Hi Gaurav,

I am working on a similar problem and have some issues setting up the boundary conditions. Did you managed to solve the problem and if so could you share you 0 file?

Thanks,
Marcus

cfdInCivil · September 3, 2024, 05:22

Hi,

I am also working on how control these wall effects.

Could someone already solve it or have some approaches?

Best

August 12, 2022, 11:31	Boundary condition in capillary rise	#1
kumar.kyutech New Member Gaurav Kumar Join Date: Jun 2022 Location: Japan Posts: 6 Rep Power: 4	Hi, I am trying to simulate capillary rise in a channel. My channel consists of a small channel inside the bigger channel (see the figure). Capture.jpg As you can see the surface contact angle at the top and bottom walls of the channel is showing correctly but when the fluid is passing through the smaller channel, the wall effect is not showing. I have given the same wall condition to the smaller channel and bigger channel. Can someone tell me what could be going wrong?

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July 7, 2023, 12:52		#2
MarcusAng New Member Marcus Join Date: Jul 2022 Posts: 8 Rep Power: 4	Hi Gaurav, I am working on a similar problem and have some issues setting up the boundary conditions. Did you managed to solve the problem and if so could you share you 0 file? Thanks, Marcus

September 3, 2024, 05:22		#3
cfdInCivil New Member Join Date: Mar 2022 Posts: 7 Rep Power: 4	Hi, I am also working on how control these wall effects. Could someone already solve it or have some approaches? Best