Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
buoyancy and convection - 3D simulation does not converge
Posted 12 août 2015, 21:15 UTC−4 Fluid & Heat, Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD) Version 4.3 1 Reply
Please login with a confirmed email address before reporting spam
Hi! Dear all,
I am now attempting to simulate the flow nearby the surfaces of an aluminum wedge, which immersed in stable thermal stratified fluid(water). Due to the metallic wedge's high conductivity, the fluid in the immediate vicinity of the slopes will be heated or cooled, then an upslope/downslope flow will occur. For 2D case, I used NITF module and a stationary solver, which can get reliable results. However for 3D case(as the attached file, I built it on a remote server. maybe some boundary conditions are wrong), no matter what solver I try, it just can't reach convergence.
Does anyone has any references or user experience about that kind of problem?Any information is good. This model bugs me for some time. Many thanks!
Best,
YP Liu
I am now attempting to simulate the flow nearby the surfaces of an aluminum wedge, which immersed in stable thermal stratified fluid(water). Due to the metallic wedge's high conductivity, the fluid in the immediate vicinity of the slopes will be heated or cooled, then an upslope/downslope flow will occur. For 2D case, I used NITF module and a stationary solver, which can get reliable results. However for 3D case(as the attached file, I built it on a remote server. maybe some boundary conditions are wrong), no matter what solver I try, it just can't reach convergence.
Does anyone has any references or user experience about that kind of problem?Any information is good. This model bugs me for some time. Many thanks!
Best,
YP Liu
Attachments:
1 Reply Last Post 12 août 2015, 21:25 UTC−4
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Sorry, I forgot to add volume force (-nitf.rho*g_const) to the fluid, which was included in my other models.