[jzyk1212]

So ive started a mini project by creating a pipe with spheres inside of it to see how these spheres affect blood flow through the pipe. The pipe is ~9mm in diameter and the spheres are 0.5mm in diameter. Ive set up everything from creating physics with properties of blood flow.

My only issue or concern is why is it taking so long to create a volume mesh? My base size is 0.2mm and everything else is default. I have used polyhedral mesher, prism layer mesher and surface remesher. It is currently generating subsurfaces at the 33000th iteration now. Is something wrong? If i increase the base size to 1m, the pipe does not even generate, only the spheres do but even then, the spheres are pyramid shaped.

Any suggestions on what to do?

[Devansh]

Originally Posted by jzyk1212

So ive started a mini project by creating a pipe with spheres inside of it to see how these spheres affect blood flow through the pipe. The pipe is ~9mm in diameter and the spheres are 0.5mm in diameter. Ive set up everything from creating physics with properties of blood flow.

My only issue or concern is why is it taking so long to create a volume mesh? My base size is 0.2mm and everything else is default. I have used polyhedral mesher, prism layer mesher and surface remesher. It is currently generating subsurfaces at the 33000th iteration now. Is something wrong? If i increase the base size to 1m, the pipe does not even generate, only the spheres do but even then, the spheres are pyramid shaped.

Any suggestions on what to do?

Please check the dimension of domain and units you are using....i.e is there any scaling issue ??
Else there shouldn't be any problem for such a simple geometries like pipe n small sphere....

[profi_star-ccm+]

Originally Posted by jzyk1212

So ive started a mini project by creating a pipe with spheres inside of it to see how these spheres affect blood flow through the pipe. The pipe is ~9mm in diameter and the spheres are 0.5mm in diameter. Ive set up everything from creating physics with properties of blood flow.

My only issue or concern is why is it taking so long to create a volume mesh? My base size is 0.2mm and everything else is default. I have used polyhedral mesher, prism layer mesher and surface remesher. It is currently generating subsurfaces at the 33000th iteration now. Is something wrong? If i increase the base size to 1m, the pipe does not even generate, only the spheres do but even then, the spheres are pyramid shaped.

Any suggestions on what to do?

Gentlemen, these are elementary things in star-ccm +.
First rule: at least 4 cells per minimum body size.
Second rule: go to the region and adjust the mesh for the particle there.