CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

viscous heating and constant wall temperature

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   May 1, 2013, 10:41
Default viscous heating and constant wall temperature
  #1
New Member
 
Tajul
Join Date: Aug 2009
Posts: 27
Rep Power: 8
abir is on a distinguished road
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
abir is offline   Reply With Quote

Old   May 4, 2013, 08:25
Default
  #2
Member
 
Sa.Baraty
Join Date: Apr 2013
Location: Iran
Posts: 49
Rep Power: 4
sara22 is on a distinguished road
dear abir
you must adjust refrance value in fluent. such as inlet area, length and etc
thanks
sara22 is offline   Reply With Quote

Old   May 5, 2013, 10:13
Default viscous heating and constant wall temperature
  #3
New Member
 
Tajul
Join Date: Aug 2009
Posts: 27
Rep Power: 8
abir is on a distinguished road
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
abir is offline   Reply With Quote

Old   May 5, 2013, 10:25
Default viscous heating and constant wall temperature
  #4
New Member
 
Tajul
Join Date: Aug 2009
Posts: 27
Rep Power: 8
abir is on a distinguished road
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

abir is offline   Reply With Quote

Old   May 5, 2013, 15:02
Default
  #5
Member
 
Sa.Baraty
Join Date: Apr 2013
Location: Iran
Posts: 49
Rep Power: 4
sara22 is on a distinguished road
sa.baraty@gmail.com
sara22 is offline   Reply With Quote

Old   May 17, 2013, 12:17
Default
  #6
New Member
 
Tajul
Join Date: Aug 2009
Posts: 27
Rep Power: 8
abir is on a distinguished road
Hey
Where are you
abir is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Free stream temperature in tube wall saharesobh FLUENT 2 November 19, 2012 08:32
Free stream temperature saharesobh FLUENT 1 October 11, 2012 20:52
How to get free stream temperature in boundary condition saharesobh FLUENT 0 October 9, 2012 17:12
temperature of the last grid of the wall at the exit is decreased dsanthosh2 FLUENT 0 June 7, 2012 03:42
Impact temperature on an aircraft Santos-Dumont FLUENT 2 August 18, 2011 12:01


All times are GMT -4. The time now is 03:13.