I am simulating a hydraulic jump in a rectangular flume that has an inlet and an tailgate at outlet. I need to adjust the tail gate opening to get the desired hydraulic jump. So i simulated the case for few time steps but now I want to drop the tail-gate further to obstruct the flow.
I have duplicated the geometry,mesh and setup , then i changed the dimension of my tail-gate (there by closing the outlet opening below the tail-gate further) . I have initialised the case with the existing .cdat file from the previous simulation. But the console shows me DIVERGENCE immediately after running the calculations.I even updated the mesh and re-cheked the setup Could help me with this?
Dear
You did right things by duplicating your first case, however, sometimes changes in geometry leads to some changes in mesh ( ex. undefined names of inlets and outlets)
check also when opening your setup check if the case is imported successfully.
I hope this can help
Ahmed
Hi Subham,
By duplicating you first case, it is a way to update your mesh and Fluent setup.
However, not all the times the geometry changes goes well in updating mesh and further fluent setup.
A good way to try:
After you changed your geometry save a geometry file.
You can start a new project in workbench and import your modified geometry.
Then, all the rest you have to redo from mesh to fluent setup, initiate and run the solution.
Hopefully, you will be able to solve your problem.
Regards,
Kristaq Hazizi
In addition to mesh error, It could also be due to some ill-defined boundary conditions in FLUENT. Or it can be due to the algorithm or due to the numerical discretization schemes you have used.
Please follow this link: https://forum.ansys.com/discussion/31149/error-divergence-detected-in-amg-solver-ads-0
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