ABAQUS heat transfer with cooling using HETVAL subroutine
From Norm X@21:1/5 to All on Tue Feb 23 17:31:07 2016
<firstname.lastname@example.org> wrote in message news:email@example.com...
I am simulating the heat transfer for an underground warehouse using 3 different target temperatures. I am using the HETVAL subroutine to account
for the internal heat generation for each target temperature. It works just fine for temperatures above 0 degrees Celsius. However, for negative temperatures I receive a convergence error. The error is: "FIXED TIME
INCREMENT IS TOO LARGE", "NOTE: THE SOLUTION APPEARS TO BE DIVERGING. CONVERGENCE IS JUDGED UNLIKELY".
I would like to simulate the heat flux for a target temperature of -25
degrees Celsius; however HETVAL does not seem to work for the cooling down
of the warehouse.
Any suggestions on how to overcome this problem? Any ideas would be greatly appreciated.
"User subroutine HETVAL allows you to define a heat flux due to internal
heat generation for heat transfer, ... " I didn't even bother to expand.
HETVAL is for internal heat generation not cooling. To solve the problem
you need another subroutine or another program. When in doubt, read the