Solar Chimney Power Plant mesh
 

Dear all,

Thank you in advance for your time reading this.

I am creating a CFD model of a Solar Chimney Power Plant where incident solar energy will heat the air within the geometry however unfortunately I am unable to create a mesh appropriate. My skewness value is far too large and despite my best efforts of altering sizes and inserting inflation I cannot lower my skewness value at all. So much so that when a calculation is run I get a suggestion to better my mesh and doing nothing results in a floating point error when calculations are run; I presume due to the poor quality of my mesh?

Please see attached my standard generation mesh with associated skewness graph. While changing to smaller cell sizes improves its rating a little it is still not of satisfactory levels.

Any help would be very very much appreciated as I am finding it quite difficult.

Ben

Hi Benjamin,

Your model is too big, You need lot of elements in it if you want to use that big model.
To reduce skewness you need to give body sizing and edge sizing but as I said your model is too big for that.
Why dont you slice the model in half and run the simulation on a small model?
This will reduce your number of elements and will help you solve quicker.
How many elements are you getting currently?
Click on individual skewness bars to see where skewness is high and provide sizing thr.


Hope it helps

Cheers
KAPI

You should consider using sizing function and sizing on the faces/edges. You can click on the individual bars to see the exact location of cells with low quality mesh elements.