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-   -   Adapt the motorBike case to a cube (https://www.cfd-online.com/Forums/openfoam/255570-adapt-motorbike-case-cube.html)

gardener96 April 17, 2024 03:45

Adapt the motorBike case to a cube
 
Hello,
As an academic exercise, I am trying to simulation the flow around a 10mx10mx10m cube. As I am new to openfoam, I have taken the motorBike tutorial case and replaced the geometry and multiplied the dimensions of the box and refinement box in blockMesh and snappyHexMesh by a factor of 20 to ensure that the cube is indeed in the boxes.
When i run the case as it is, and visualise on Paraview, I only see the cube, not the boxes. I have checked that all relevant mesh regions are checked.



I have then tried with a much smaller cube of 1mx1mx1m, and it works then. I am intrigued as I have checked that the 10m cube fits inside the boxes by overimposing the two simulations on Paraview.



I'm sorry for the lack of details, but I have really made minimal changes to the motorBike case file, and am completely lost as to why this will not work for the larger cube.



Thank you in advance!

Yann April 17, 2024 04:32

Hello,

You probably want to have a look at the locationInMesh parameter.

Cheers,
Yann

gardener96 April 17, 2024 05:54

Hi Yann,
I was not aware of that parameter, but indeed changing it to a coordinate outside the cube solved the issue! Thank you very much!



Tamara


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