{"id":370389,"date":"2024-07-04T04:18:42","date_gmt":"2024-07-04T04:18:42","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/the-simulation-time-for-lesfw-h-model-increase-alot\/"},"modified":"2024-07-04T04:18:42","modified_gmt":"2024-07-04T04:18:42","slug":"the-simulation-time-for-lesfw-h-model-increase-alot","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/the-simulation-time-for-lesfw-h-model-increase-alot\/","title":{"rendered":"The simulation time for LES+FW-H model increase alot"},"content":{"rendered":"

Hi,<\/p>\n

I used the LES model to simulate the single phase fluid flow in the pipe. And I use the FW-H model to calculate the noise generation in the receiver.<\/p>\n

The plot shows the simulation time vs the total number of steps I have run. The computational time is very wired.<\/p>\n

<\/p>\n

In the plot, for the first 10000 steps, it takes 10 hrs, but for the second 10000 steps, it takes 50 hrs. And for the later steps, the computational time increase exponentionally. <\/p>\n

There are totally 5, 000 cells of my model. I tried, 5 10 15 20 30 cores to run the model, but all the tests obey the this relationship between computation time and number of time step. Which means, the computation time does not decrease even though I increase the cores.<\/p>\n

What is the reason for this phenomenon? And what can I do to improve my simulation efficiency?<\/p>\n

 <\/p>\n

Best regards,<\/p>\n

Leo<\/p>\n","protected":false},"template":"","class_list":["post-370389","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t