radiation patches, viewfactors

March 8, 2009, 02:17

Hi, anyone familiar with thermal radiation in Star-CCM? Is it normal for the viewfactors, radiation patches calculation to take as long as 22 hours (see below) prior to the 1st iteration of the computation?? I'm letting Star-CCM to create the patches automatically by simply running the solution. Is there something wrong here or any method to make it faster?

Patches processed : 578800 - 66.4038 % of total INFO CPU Time: 80267.65, Wall Time: 80267.65, Memory: 5021.11 MB

Patches processed : 578900 - 66.4153 % of total INFO CPU Time: 80277.29, Wall Time: 80277.29, Memory: 5021.18 MB

Patches processed : 579000 - 66.4267 % of total INFO CPU Time: 80287.71, Wall Time: 80287.71, Memory: 5021.24 MB

Patches processed : 579100 - 66.4382 % of total INFO CPU Time: 80297.69, Wall Time: 80297.69, Memory: 5021.05 MB

March 12, 2009, 07:39

Yes change the number of patches from 100% to 50 or 20%

March 8, 2009, 02:17	radiation patches, viewfactors	#1
beams Guest Posts: n/a	Hi, anyone familiar with thermal radiation in Star-CCM? Is it normal for the viewfactors, radiation patches calculation to take as long as 22 hours (see below) prior to the 1st iteration of the computation?? I'm letting Star-CCM to create the patches automatically by simply running the solution. Is there something wrong here or any method to make it faster? Patches processed : 578800 - 66.4038 % of total INFO CPU Time: 80267.65, Wall Time: 80267.65, Memory: 5021.11 MB Patches processed : 578900 - 66.4153 % of total INFO CPU Time: 80277.29, Wall Time: 80277.29, Memory: 5021.18 MB Patches processed : 579000 - 66.4267 % of total INFO CPU Time: 80287.71, Wall Time: 80287.71, Memory: 5021.24 MB Patches processed : 579100 - 66.4382 % of total INFO CPU Time: 80297.69, Wall Time: 80297.69, Memory: 5021.05 MB

March 12, 2009, 07:39	Re: radiation patches, viewfactors	#2
MK Guest Posts: n/a	Yes change the number of patches from 100% to 50 or 20%

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