temperature problem with non-premixed combustion
 

Hello all.i simulate gas combustion using the PDF mixture fraction model,DO radiation model（fluent 6.3）. i got a converged result, but the temperatue is about 200K higher than the normal situation. i checked the grid and the models, i dont know why this happen. please help me, thank you very much!

sincerely

Re: temperature problem with non-premixed combusti
 

Hi vic yang,

I am also working in non premixed combustion only, please can u tell me what is PDF means in non premixed combustion, for me its is showing PDF20, please clear my doubt......

With regards, Kolam

Re: temperature problem with non-premixed combusti
 

Hello Kolam,

As for the PDF mixture fraction model, you can see the help of fluent. As far as I know, the PDF20 you said maybe mean that there are 20 species in your PDF-mixture.Good luck.

Sincerely, Vic

Re: temperature problem with non-premixed combusti
 

Hi Vic,

Thanks for ur reply...

By, Kolam