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 The information provided may be out of date.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.

Multicomponent multiphase flow

Please login with a confirmed email address before reporting spam

I am currently simulating a model in which the two carrier phases involved are water and toluene and the diffusing components are acetone and methyl isopropyl ketone (MIPK). This problem is to be solved using the Stefan-Maxwell equations together with the Navier-Stokes equations.

I have the inlet composition and the velocity conditions. I am in a fix as to which model is to be used for this. I have used the pde mode general form for Stefan-Maxwell equations and single phase Incompressible flow model for Navier-Stokes (each phase). I am attaching the model herewith. I am getting some results, but when I change the channel dimensions, the profiles of concentration and velocity do not change.

5 Replies Last Post Jun 13, 2014, 8:46 a.m. EDT
COMSOL Moderator

Hello Siddharth Kulkarni

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.


Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Feb 24, 2013, 9:25 a.m. EST
Hi,

Have you got a solution for this problem?

Best Regards,
Natan
Hi, Have you got a solution for this problem? Best Regards, Natan

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Feb 24, 2013, 9:35 a.m. EST
Hi,

I sorted it out somehow. I think the trick is to stick to the general mode pde form for more flexibility. Yet, I am not 100 % sure whether I have applied all the boundary conditions correctly. However, COMSOL exhibited convergence and results were reasonable enough.
Hi, I sorted it out somehow. I think the trick is to stick to the general mode pde form for more flexibility. Yet, I am not 100 % sure whether I have applied all the boundary conditions correctly. However, COMSOL exhibited convergence and results were reasonable enough.

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Jun 12, 2014, 5:50 a.m. EDT
just a question, which model did u use to solve the problem?
just a question, which model did u use to solve the problem?

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Jun 12, 2014, 5:59 a.m. EDT
Hi,

I used the PDE general mode (mathematics).
Hi, I used the PDE general mode (mathematics).

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Jun 13, 2014, 8:46 a.m. EDT
Hi, do you know how to use multiphysics to solve the multiphase flow?
Hi, do you know how to use multiphysics to solve the multiphase flow?

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.