Forced convection - horizontal flow against a plane sheet with a blunt edge

Thread index  |  Previous thread  |  Next thread  |  Start a new discussion

RSS FeedRSS feed   |   Email notificationsTurn on email notifications   |   1 Reply   Last post: July 29, 2013 10:10pm UTC
Matthias Flatscher

Matthias Flatscher

July 27, 2013 11:56am UTC

Forced convection - horizontal flow against a plane sheet with a blunt edge

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

Reply  |  Reply with Quote  |  Send private message  |  Report Abuse

Matthias Flatscher

Matthias Flatscher

July 29, 2013 10:10pm UTC in response to Matthias Flatscher

Re: Forced convection - horizontal flow against a plane sheet with a blunt edge

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

Reply  |  Reply with Quote  |  Send private message  |  Report Abuse


Rules and guidelines