star...problems with parameters k-epsilon

[Enrico Pascolini]

hi to everyone, I’m using star-ccm+ for my thesis work, and I’ve found some issues that I can’t overcome.

I wanted to meshare the model com "trimmed" but it tells me it is not possible as the volume is divided into + regions (4), how can I do?

I therefore decided to mesharlo as polyhedral, only that when I start the simulation the residues of tke and tdr squirt over 100, what can it depend on?

thanks to all

 

[Matteo]

I can't understand exactly the problem, maybe use words too related to the specific software: you should try to translate for non-star users.

 

[Enrico Pascolini]

I try to explain myself better, so I have a volume divided into 4 regions, if I make mesh with polyhedres I have no problem, while if I try to use a mesh "trimmed" there is reticulate says it can not be applied to + regions, what can it depend on? and how can I overcome the problem?

if I try to make simulation I use a k-epsilon turbulence model...but the results do not converge, what values do you use for constants? Where can I find them?

 

[Matteo]

I can't help you because the first question is related to specific software experts. for the second instead I think some analyst cfd (on the forum we have someone very prepared :smile: ) may give you directions.