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Showing results 1 to 8 of 8 Search took 0.00 seconds. Search: Posts Made By: max3.2

Forum: CFX May 13, 2011, 09:44

Replies: 13 Setting up a DES Views: 2,222 Posted By max3.2 Hmm im not getting a appropriate turnover time.... Hmm im not getting a appropriate turnover time. until now, i've only found some correlations and so on... still im looking for ansys tech report on des, cited as [55]...someone got this?

Forum: CFX May 11, 2011, 04:56

Replies: 13 Setting up a DES Views: 2,222 Posted By max3.2 Im not sure if i do the Taylor scale calculation... Im not sure if i do the Taylor scale calculation right. Im getting a taylor scale (a lenght) which is approx 1/4 of my timestep (a time?)

Forum: CFX May 10, 2011, 12:41

Replies: 13 Setting up a DES Views: 2,222 Posted By max3.2 Ok, I've done some research, there's still more... Ok, I've done some research, there's still more to come, but i have a few question... If I get it right, CFX Docu says boundary layer grid spacing may not fall under 0.1 boundary layer thickness....

Forum: CFX May 5, 2011, 08:58

Replies: 13 Setting up a DES Views: 2,222 Posted By max3.2 Allright i will check those. Is there a book... Allright i will check those. Is there a book or something you'd say is a "must-read"? I've got the Peric, Ferzinger CFD-Book, and some other german stuff about LES-Modelling, it should be enough,...

Forum: CFX May 5, 2011, 05:23

Replies: 13 Setting up a DES Views: 2,222 Posted By max3.2 Thats already done. I trie to model Vortex... Thats already done. I trie to model Vortex movement and turbulent structure over time, and im writing a paper about it done with LES/DES. So its okay if i have to read some literature, ive got plety...

Forum: CFX May 4, 2011, 14:37

Replies: 13 Setting up a DES Views: 2,222 Posted By max3.2 I now tried to subsequently reduce the timestep,... I now tried to subsequently reduce the timestep, and so im getting larger areas with small blending values. but still i do not reach 0. is this an error or maybe connected to the model? is there a...

Forum: CFX May 4, 2011, 07:40

Replies: 13 Setting up a DES Views: 2,222 Posted By max3.2 Allright, thanks. Ill take a deeper look. ... Allright, thanks. Ill take a deeper look. Another thing - even if i said i knew how to set up timestepping, i was wrong. DES Blending Function wont go anywhere near 0. Am I right to assume my...

Forum: CFX May 4, 2011, 03:47

Replies: 13 Setting up a DES Views: 2,222 Posted By max3.2 Setting up a DES Hi, Im about to set up a DES from a acceptably converged (after approx 150 It.) SST Solution. Calculation of Total Time and Timesteps is no the problem, but whats a good value to choose for...

Showing results 1 to 8 of 8

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