|
[Sponsors] |
November 28, 2022, 05:30 |
Mesh sensitivity study for large setups
|
#1 |
Senior Member
Daniel
Join Date: Feb 2017
Location: Germany
Posts: 147
Rep Power: 9 |
Hello,
I am doing a large centrifugal pump simulation with a suction chamber, impeller (complete) and volute. I also wanted to carry out a mesh sensitivity analysis. But, I was wondering, if it is acceptable to use the pervious result (for example the result of the course mesh) as initial conditions for the "medium mesh". Or, should I start every simulation from zero, which would result in a larger computational time. Can anyone explain if this would make a big difference in the numerical results ? Thank you and kind regards Daniel |
|
November 28, 2022, 15:06 |
|
#2 | |
Senior Member
Join Date: Jun 2009
Posts: 1,804
Rep Power: 32 |
Quote:
Be certain the interpolator step is included such it can interpolate from the previous to the new mesh. If the solution is reasonably close (converged), the computational time should decrease though that is not always the case since with mesh refinement other flow features missing in the initial values must also be converged.
__________________
Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum. |
||
November 29, 2022, 05:37 |
|
#3 |
Senior Member
Daniel
Join Date: Feb 2017
Location: Germany
Posts: 147
Rep Power: 9 |
Perfect, thank you for your response and explanation.
Thats a good point, to activate the interpolator for the mesh - didn't thought about it. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
GeometricField -> mesh() Function | Tobi | OpenFOAM Programming & Development | 10 | November 19, 2020 11:33 |
[Other] Difference between Mesh independance study and Mesh Sensitivity Study | kunvd | ANSYS Meshing & Geometry | 4 | September 1, 2016 21:31 |
[snappyHexMesh] Layers:problem with curvature | giulio.topazio | OpenFOAM Meshing & Mesh Conversion | 10 | August 22, 2012 09:03 |
[ANSYS Meshing] Any way around mesh study using mesh stats? | Torque_Converter | ANSYS Meshing & Geometry | 5 | June 4, 2012 10:07 |
Mesh sensitivity when using phase change models | BKaus | STAR-CCM+ | 0 | February 28, 2012 20:51 |