using DO radiation model

Dalia · January 9, 2015, 07:13

Hi

I work on natural convection in inclined channel.
when i have stimulated the pur natural convection, a good results are obtained, but when i use the DO model to test the effect of surface radiation, the results are bad (illogical). i don't understand where is the problem. the radiation properties of the air (absorption and scattering coefficient) equal to zero, but n=1. can you help me please.
thanks

Ashraf Mimi · January 9, 2015, 08:39

Dear Dalia...

Check the box to react DO/Energy coupling

This will give satisfactory convergence and data inshaallah

Dalia · January 9, 2015, 09:45

thanks mimi i will try

January 9, 2015, 07:13	using DO radiation model	#1
Dalia New Member dalila Join Date: Jan 2015 Posts: 2 Rep Power: 0	Hi I work on natural convection in inclined channel. when i have stimulated the pur natural convection, a good results are obtained, but when i use the DO model to test the effect of surface radiation, the results are bad (illogical). i don't understand where is the problem. the radiation properties of the air (absorption and scattering coefficient) equal to zero, but n=1. can you help me please. thanks

January 9, 2015, 08:39	I guess the problem	#2
Ashraf Mimi New Member Join Date: Jan 2015 Posts: 6 Rep Power: 11	Dear Dalia... Check the box to react DO/Energy coupling This will give satisfactory convergence and data inshaallah

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January 9, 2015, 09:45		#3
Dalia New Member dalila Join Date: Jan 2015 Posts: 2 Rep Power: 0	thanks mimi i will try