viscous heating and constant wall temperature
 

Hi
I am simulating microflow. My simulation is 2D with inlet temp. 350K and two walls with 300k. The inlet and outlet pressure condition. I want to keep constant wall temperature. I added viscous heating term. I get the result which seems wrong. The simalation should give negative heat flux, but it gives positive heat flux. Also Tm (Mean temperature) should greater than wall temperature. But Tm is less than Tw ( wall temp).

Can anybody explain why?
Thanks in advance.
Abir
tajul000@yahoo.com

dear abir
you must adjust refrance value in fluent. such as inlet area, length and etc
thanks

viscous heating and constant wall temperature
 

Dear sara22
Thanks for your reply. I did as you said but could not succeeded. I sent you the cas and dat files. If possible please help me. Have a nice time.

Abir
tajul000@yahoo.com

viscous heating and constant wall temperature
 

Dear sara22
Thanks for your reply. I did as you said but could not succeeded. I want to send you the cas and dat files so your email address is needed. If possible please help me. Have a nice time.

Abir
tajul000@yahoo.com

Hey
Where are you