Setting Time Step of LES
 

Hi, I'm a graduate student of Architecture so, my background is not mechanical eng. Due to this, I can do STAR CCM+ as a routine for building application. However,I'm trying to use LES but I can't figure out how I can setup maximum physical step in STAR CCM+.

My work is to simulate wind tunnel with just cubic model. Is there anyone to tell me setup general physical time and inner iterations?

Danny

Do you know how long does it take to air flow enter and then leave the domain?

I assume that 100mph blows. So, it might take 1~2sec. But I'm not sure. Do I have to calculate the physical time?


The air enters to X direction and its speed is just 44.7m/s. The domain size is 180m*340m*66m(h). The number of mesh is about 300,000.

Danny

I assume that 100mph blows. So, it might take 1~2sec. But I'm not sure. Do I have to calculate the physical time?


The air enters to X direction and its speed is just 44.7m/s. The domain size is 180m*340m*66m(h). The number of mesh is about 300,000.

Danny

Dear Kim,

I think if you consider 0.01 second, it would be fine. However check the courant number for your solution. See what is the courant number range.