modeling non premix combustion
 

hi,
I am modeling non premix combustion with two kind of fuel(diesel and natural gas ) whit two mixture fraction (fuel sream and secondary stream approach 0,06) but I can not obtain good temperature contour !!!
but when I use one kind of fuel with two mixture fraction (fuel sream and secondary stream approach 0,06) I obtain a good temperature contour .
(please help me)