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Comsol doesn't keep initial values
Posted 24 feb 2013, 05:28 GMT-5 Fluid & Heat, Computational Fluid Dynamics (CFD), Studies & Solvers Version 4.3 0 Replies
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Now, I work on a Comsol model describing a spouted bed apparatus (spouted bed is a kind of fluidized bed, when the apparatus has a conical bottom). I use Comsol 4.3 with Euler-Euler model, laminar flow. Because I had stability problems with the stationary solver, I was forced to use the time dependent solver. I noticed, that it had convergence problems when I "turned on" the gravity, so first I ran the simulation without the gravity in the range from 0 to 3 s with the step 0.1 s. After that I selected the results from one time step as a initial value for the simulation with the gravity. In this moment I observed a problem with Comsol. When I wanted to use as the initial values the results not from the last time step for instance from 2 s Comsol always set up this option during calculation to "Automatic"
(the branch in the model: Study 1/Step 1:Time Dependent/ Solver Configuration/ Solver 1/Dependent Variables 1/Initial Values of Variables Solved for/
Method: Solution
Solution: Solver 1
Time: Automatic.)
Now, I can't use as initial values the results from any time step but only from the last one. Can anybody help me ?
By the way, I have a little question to Comsol producers. Are You going to add Euler-Euler model with turbulent flow to the CFD module ?
Hello Lechoslaw Krolikowski
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