I am setting up to run a transient RANS problem. I have attached the case.sif file for reference.
The geometry is an inclined plate, 2D, in a rectangular flow domain. The inlet has a constant velocity profile for now. Eventually, I will modify the boundary condition to reflect a turbulent flow profile. At present, I am just trying to work the bugs out prior to running the actual simulation that I want to run.
The simulation starts and runs fine, but at roughly 2/3 of the way through the simulation the inlet boundary condition changes. The velocity had been set to Velocity 1 = 0.05. Everything is running fine and then when I am post processing the output, there is a step change in the solution (I am only keeping a portion of the output).
When analyzing the output in Paraview, I note that the inlet velocity condition went from 0.05 to 0.01 ...
Any thoughts or suggestions? Anyone seen this before? The solution appears to reach a steady state at about this time - so I am not sure if that has an impact or not.
Thanks in advance for any feedback.
Randy
Boundary condition changes in transient simulation
Boundary condition changes in transient simulation
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Re: Boundary condition changes in transient simulation
Hi
My guess is that you have old .vtu files present and only partially overwrite them. Perhaps your previous test runs had different inlet velocity?
-Peter
My guess is that you have old .vtu files present and only partially overwrite them. Perhaps your previous test runs had different inlet velocity?
-Peter
Re: Boundary condition changes in transient simulation
Hmmmm ... I will have to check into that. I am not sure, but ... maybe? Thanks for the suggestion - I greatly appreciate it.