[hassanmaleki]

Hi

I want to simulate the airflow in a room and for radiation model I used S2S and DTRM but I was faced with a problem; View factor calculations takes too much time even with core i7 and 8G ram system! aaand after a long time show error message!!!
Do you have any idea?

Best regards,
Hassan

[Bionico]

Hello Hassan,
about S2S, are you using default parameters? I suggest increasing faces/cluster value and decrease resolution.
In addition, I hope you have Fluent R15 or at least R14, because R13 is much more slower in calculating view factors (I tested every of these realeses!).

Best Regards

[hassanmaleki]

Hello Bionico

I was disappointed that someone answer to my question and thank you very much for your reply!
I'm a begginer in fluent and I have n't any experience in modeling and work with radiation models! sooo,I'm using default parameters.
I've been reading the fluent's manual for radiation models but I can't understand what says,exactly!!!!!
In addition, I'm using gambit and fluent6.3! but I will try your suggest with Ansys!
Thank you again and I'm grateful to you if you have more tips!

Best regards,
Hassan

[Bionico]

You can try also Hemicube option (read carefully the Manuals about limitations!): it reduces computational time.
Anyway the best thing in your case is to change the parameters as I said before.

Regards

[hassanmaleki]

Thank you