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Boundary condition setting of static liquid in a channel

Posted Dec 3, 2018, 9:30 a.m. EST Microfluidics Version 5.2a 2 Replies

学贵 杨
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The question is that I don't know the exactly correct boundary condition setting of static liquid in a channel. In other words, the initial velocity of the liquid is 0. Then I want to ask if i could established the inlet velocity as the inlet boundary condition. Well, I'm looking forward to you answer anyway. Thanks very much.

2 Replies Last Post Dec 5, 2018, 8:59 p.m. EST
Sohan Birla
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Posted: 6 years ago Dec 4, 2018, 5:24 p.m. EST

Assign THE CHANNLE TOP Liquid surface as open boudary or wall with slip boudnary

Assign THE CHANNLE TOP Liquid surface as open boudary or wall with slip boudnary
学贵 杨
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Posted: 6 years ago Dec 5, 2018, 8:59 p.m. EST

Assign THE CHANNLE TOP Liquid surface as open boudary or wall with slip boudnary

Well, thanks for yor gentle reply very much. However I still have doubt about this matter. As you know, the channel top and bottle liquid surface can be assigned as open boudary or wall with slip boudnary, but it's difficult for me to deal with the inlet and outlet condition of the channel. And the main question I want to ask was that if I can establish the inlet velocity as the inlet boundary condition, but the liquid don't have the initial velocity in fact. So is this setting correct or reasonable anyway? Thanks very much. Best wishes for you sincerely.

>Assign THE CHANNLE TOP Liquid surface as open boudary or wall with slip boudnary Well, thanks for yor gentle reply very much. However I still have doubt about this matter. As you know, the channel top and bottle liquid surface can be assigned as open boudary or wall with slip boudnary, but it's difficult for me to deal with the inlet and outlet condition of the channel. And the main question I want to ask was that if I can establish the inlet velocity as the inlet boundary condition, but the liquid don't have the initial velocity in fact. So is this setting correct or reasonable anyway? Thanks very much. Best wishes for you sincerely.

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