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problem in implementing laminar inflow as BCs in 5.2
Posted 26 août 2017, 09:47 UTC−4 Fluid & Heat Version 5.2 1 Reply
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Hello friends,
I have built a microfluidic model in COMSOL 5.2. It's a basically 2D long pipe. I tried to use 'laminar inflow -> flow rate' and 'laminar outflow -> pressure' as inlet and outlet BCs respectively. But the software failed to give an answer. Instead, if I specified pressure at both boundaries, then it succeeded to give a result. So how can I use the 'flow rate' as an inlet BC properly?
I have built a microfluidic model in COMSOL 5.2. It's a basically 2D long pipe. I tried to use 'laminar inflow -> flow rate' and 'laminar outflow -> pressure' as inlet and outlet BCs respectively. But the software failed to give an answer. Instead, if I specified pressure at both boundaries, then it succeeded to give a result. So how can I use the 'flow rate' as an inlet BC properly?
1 Reply Last Post 30 août 2017, 06:49 UTC−4
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Posted:
7 years ago
Hi Jin
What do you mean with "failed to give an answer"? Didn't reach convergence, output an error (if yes what error), results not physically real?
Did you defined properly the units?
What do you mean with "failed to give an answer"? Didn't reach convergence, output an error (if yes what error), results not physically real?
Did you defined properly the units?