Coarse mesh
 

Hi there,

This is Julio. I am new to OpenFoam and CFD. I have a very basic question but I am having a hard time trying to fix it.
I have a very basic space I want to analyze the temperature and air speed variations within. I have inlet boundaries and some other interior features. The problem occurs when generating the main boundary of the space the shape is similar to a semicircle but I simplified it with straight lines. However, when I run the OpenFOAM meshing it generates a mesh with very coarse edges and this gives me very strange results.
I have marked in red how I think it should be to obtain more realistic results.
Does anybody know why is this happening? which parameters should I modify to obtain a straight mesh? which is the right settings so all the inlets work as they should? which is the right boundary type for a AC system, inlet boundary or inlet flow-rate boundary?

Thanks in advance.

Hello Julio,

please upload a picture of your mesh and post your sHMDict.

Why do you use straight lines and not just a semicircle?

Where are your inlets and where are your outlets?

What solver are you using?

What boundary conditions are you using right now?

Best regards,
Vinz