Hi,
I am trying to model laminar fluid flow, heat transfer in fluids, and mass diffusion simultaneously in comsol using transient solver. The problem is that when I put the upper limit for time 1 (range: 0:0.01:1) I get this error:
"Repeated error test failures. May have reached a singularity.
Time : 0
Last time step is not converged."
But, when I increase the upper limit to 7 (range: 0:0.01:7), the solution converges without any problem or errors! This is strange since the only change to the problem is the upper limit for time.
I need to know what is the problem. Thanks in advance.
SMHH
I am trying to model laminar fluid flow, heat transfer in fluids, and mass diffusion simultaneously in comsol using transient solver. The problem is that when I put the upper limit for time 1 (range: 0:0.01:1) I get this error:
"Repeated error test failures. May have reached a singularity.
Time : 0
Last time step is not converged."
But, when I increase the upper limit to 7 (range: 0:0.01:7), the solution converges without any problem or errors! This is strange since the only change to the problem is the upper limit for time.
I need to know what is the problem. Thanks in advance.
SMHH