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 The information provided may be out of date.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.
Time dependent problem, never getting a solution
Posted 25.03.2011, 13:47 GMT-4 Fluid & Heat, Heat Transfer & Phase Change, Studies & Solvers Version 3.5a 1 Reply
Please login with a confirmed email address before reporting spam
Hi everybody,
I want to solve a navier stokes and heat transfer problem transiently.
There are weak boundary terms and ALE as well..
When I press on the solve button I have endless runs without even getting a time value different from zero..
The solver assembles the matrice and solves the linear system but the time value never increases.
What is the problem here?
Can somebody help me?
I want to solve a navier stokes and heat transfer problem transiently.
There are weak boundary terms and ALE as well..
When I press on the solve button I have endless runs without even getting a time value different from zero..
The solver assembles the matrice and solves the linear system but the time value never increases.
What is the problem here?
Can somebody help me?
1 Reply Last Post 26.03.2011, 04:03 GMT-4
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Hi
my suggestion is to check the initial conditions, they may be too far from the final result, put some velocity, pressure drop, temeprature field, just a first guess, it often helps to set the gradients, then the sover might finds a better direction to start with, than a all flat "0"
--
Good luck
Ivar
my suggestion is to check the initial conditions, they may be too far from the final result, put some velocity, pressure drop, temeprature field, just a first guess, it often helps to set the gradients, then the sover might finds a better direction to start with, than a all flat "0"
--
Good luck
Ivar