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Forced convection - horizontal flow against a plane sheet with a blunt edge
Posted Jul 27, 2013, 7:56 a.m. EDT Fluid & Heat, Heat Transfer & Phase Change, Modeling Tools & Definitions, Parameters, Variables, & Functions 1 Reply
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Hi folks,
that's my first time I'm working with COMSOL MULTIPHYSICS and I'm trying to simulate a horizontal flow against a plane sheet with a blunt edge.
I use convective and conductive (cc) and Incompressible Navier Stokes (ns) mode with the following properties:
- forced - flow: 35m/s and -30°C
- plane - sheet: +4°C
When I try to solve the problem I always get the following error massage:
Failed to find a solution:
No convergence, even when using the minimum damping factor.
Returned solution has not converged.
Can someone give me a hint how to solve such a problem??? Maybe I just use the wrong models.....
Thx
that's my first time I'm working with COMSOL MULTIPHYSICS and I'm trying to simulate a horizontal flow against a plane sheet with a blunt edge.
I use convective and conductive (cc) and Incompressible Navier Stokes (ns) mode with the following properties:
- forced - flow: 35m/s and -30°C
- plane - sheet: +4°C
When I try to solve the problem I always get the following error massage:
Failed to find a solution:
No convergence, even when using the minimum damping factor.
Returned solution has not converged.
Can someone give me a hint how to solve such a problem??? Maybe I just use the wrong models.....
Thx
1 Reply Last Post Jul 29, 2013, 6:10 p.m. EDT
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Posted:
1 decade ago
Hi,
I fixed it. The mesh wasn't fine enough.
Now I'm trying to make a transient analyse, e.g. change of the plate temperature or the ambient temperature. But I'm a little bit confused about how to set the right solver parameters (of course I set initial values).
Maybe someone have a couple of good tutorials, it seems there are not a lot of "step by step" examples in the web, and as I mentioned above, that's my first time I use COMSOL.
Thx
I fixed it. The mesh wasn't fine enough.
Now I'm trying to make a transient analyse, e.g. change of the plate temperature or the ambient temperature. But I'm a little bit confused about how to set the right solver parameters (of course I set initial values).
Maybe someone have a couple of good tutorials, it seems there are not a lot of "step by step" examples in the web, and as I mentioned above, that's my first time I use COMSOL.
Thx