|January 26, 2011, 15:31||
Grid Independent Study for a car
Join Date: Jan 2011
Posts: 64Rep Power: 7
I have a car and I need to perform grid independent study on the car, I have made the default mesh and it was OK however I need the grid independent study for better meshing.
Does anyone have a good website I can learn how to create grid independent study?
Thanks a lot, J
|January 26, 2011, 20:05||
A grid independent study (which should be called grid dependence study) looks at how the solution evolves with the grid resolution. Here is how you can undertake such study:
1) Build a reference grid G;
2) Run the simulation on the reference grid (to a defined convergence level);
3) Extract relevant information (drag?);
4) Build a refined grid G-R1 (if you do it by the book it is refined by 2 in all directions);
5) Run simulation
6) Extract relevant information;
7) Build a refined grid G-R2 (refined compared to G-R1) and redo 5 and 6 on R2
8) Plot the relevant information as a function of G, G-R1 and G-R2.
The solution is grid independent if the information does not change with G, G-R1 and G-R2 (meaning that your grid R is "fine enough" to capture the physics/numerics/etc).
Hope this help.
Julien de Charentenay
|Thread||Thread Starter||Forum||Replies||Last Post|
|how to do a grid independent study||xyq102296||ANSYS||7||July 13, 2016 12:53|
|What is meant by Grid Independence Study?||Khan||FLUENT||10||July 2, 2015 22:40|
|Combustion Convergence problems||Art Stretton||Phoenics||5||April 2, 2002 05:59|
|Grid Independent Solution||Hesham M. Aly||FLUENT||2||October 5, 2000 08:24|