[wales]

Hello,

Im wondering about how to improve time wasting for mesh. my pc has 2.4 ghz to 3,2 ghz(with turbo) and 12 gb ram. (i7 8 core)

For my project, I have to apply 5mm mesh to a 4m long surface. The fluid zone has dimensions of 4mx2,3mx0,039m. When I apply 5mm mesh to 4m long surface, ansys cant create it within normal time. it takes 30 minutes minimum. even if it is solved, you can not move the mesh because of high forcing.

Im checking the cpu usage. it shows only %9 when solving mesh.Why is it not using more capacity to solve mesh in shorter time? is there a way to rise its usage of cpu for ansys? thanks in advance.

[shereez234]

I am interested in this as well.

[marauder]

Originally Posted by wales

Hello,

Im checking the cpu usage. it shows only %9 when solving mesh.Why is it not using more capacity to solve mesh in shorter time? is there a way to rise its usage of cpu for ansys? thanks in advance.

Is it using all cores 9%? Or some single core with higher percentage?

[wales]

I dont know exactly. I checked it on task manager-performance tab. On that tab, it says cpu usage %9 , number of precessors 1 and max speed 2.4 Ghz( shouldn't it be more? )

Then, I set the number of cores via msconfig from 1 to 8. But it didnt change anything.

[marauder]

Originally Posted by wales

Then, I set the number of cores via msconfig from 1 to 8. But it didnt change anything.

msconfig? Didn't understand that.
Anyways you can set no. of cpu's to be used by ansys mesh by going to tools>options>Meshing>Meshing>Number of CPU

See if it has any effect. Normally what I observed is if your model has too many zones then it takes time for Ansys Meshing for figuring out how to proceed with meshing. A figure of your meshing would be helpful to understand your problem.

[wales]

Thank you, hope it will work. I will provide a mesh figure and show what I meant by msconfig asap.

[wales]

Unfortunately it doesnt work. you can refer to the mesh figure attached. its comprised of 4m long two parallel walls. The walls have temperature gradient and air is blowing at 6 m/s between them. I need to observe the heat transfer coefficient between wall and air. According to my y+ calculation, I have to apply 0,056 mm for first cell adjacent to wall, but I cant go on with below 7 mm. How can I apply small mesh for the adjacent wall? Im planning to use k-w SST model.

[marauder]

That's a very dense mesh for the problem you have mentioned.
Try to use inflation layers which will help you to create lesser cell height near the walls only. You can specify the y+ value while setting up inflation layers. Such dense mesh at other parts is not required for your problem. Change the global minimum cell size you are using to default.
Please go through user guide to learn about this method.

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&ved=0CDAQFjAD&url=https%3A%2F%2Fwww.u-cursos.cl%2Fingenieria%2F2011%2F2%2FME5600%2F1%2Fmaterial_docente%2Fbajar%3Fid_material%3D385915&ei=RDRIVeWgEKXcmgXmtYDoAw&usg=AFQjCNG4AGTqmHp7xBvzcwuZ0gNfzluCgg&sig2=z5Bwss9V5TfSikuZXSzaFA&bvm=bv.92291466,d.dGY&cad=rja