Boudary conditions

monochrome · December 6, 2009, 23:27

Hello guys,

I have some questions that I'd like to ask you.
I am simulating the flow in the rectangle reactor without a celing and the path of small bubbles injected at lower part of reactor.
There is a pump in the system so the water is circulating.

The bubbles are soppose to get out of the reactor either from outlet of the reactor which leads to the pump or from the surface of the water.

With the conditions that I set, the result showed that the bubbles went out of the reactor only though outlet of the reactor.
Does anyone have an idea which Bounday condition I should set for the interface between water and air?

Thanks in advance,

thecfduser · December 7, 2009, 01:38

Hi
what conditions did u tried?
are u simulating in eulerian/eulerian???? if yes, it is maybe better that u do a lagrangian/eulerian simulation....specially that ure water is driven by a pump and not by bubbles...
Regards

monochrome · May 19, 2010, 02:07

thanks for your reply and so sorry for the late reply.
I have tried as your suggestion and it worked out.
thanks so much again!

December 6, 2009, 23:27	Boudary conditions	#1
monochrome New Member Michel Join Date: Dec 2009 Posts: 3 Rep Power: 16	Hello guys, I have some questions that I'd like to ask you. I am simulating the flow in the rectangle reactor without a celing and the path of small bubbles injected at lower part of reactor. There is a pump in the system so the water is circulating. The bubbles are soppose to get out of the reactor either from outlet of the reactor which leads to the pump or from the surface of the water. With the conditions that I set, the result showed that the bubbles went out of the reactor only though outlet of the reactor. Does anyone have an idea which Bounday condition I should set for the interface between water and air? Thanks in advance,

May 19, 2010, 02:07	thanks	#3
monochrome New Member Michel Join Date: Dec 2009 Posts: 3 Rep Power: 16	thanks for your reply and so sorry for the late reply. I have tried as your suggestion and it worked out. thanks so much again!

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December 7, 2009, 01:38		#2
thecfduser Senior Member karine Join Date: Nov 2009 Posts: 158 Rep Power: 16	Hi what conditions did u tried? are u simulating in eulerian/eulerian???? if yes, it is maybe better that u do a lagrangian/eulerian simulation....specially that ure water is driven by a pump and not by bubbles... Regards