Please select the most relevant MFiX category: | Installation | How to | Bug report | Share | for this topic.
Hello,developers:
As shown in the figure, I’m trying to complete the simulation of the water flow in the microchannel, but the case is slow to converge.
I wonder if there is some problem with my case setup, or if the setup can be optimized to ensure case convergence. I have uploaded my case report and would appreciate some advice from you, thanks a lot! fluid.zip (4.2 MB)
First, you may want to upgrade to 24.1.
Second, you may be better off using rectangular regions and assign a no-slip wall to them rather than using stl files.
Please try the attached. I increased the normal wall distance tolerance and increased the max number of iteration for pressure and velocity in the linear equation solver (better convergence for incompressible fluid). I hope you can run with a larger DT_MAX, it is going to take a while with DT_MAX=1E-5 s!
