CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Periodic Heat transfer error in temperature distribution

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

LinkBack Thread Tools Search this Thread Display Modes
Old   August 14, 2021, 03:38
Default Periodic Heat transfer error in temperature distribution
New Member
Madhu Kalyan
Join Date: Jun 2020
Posts: 7
Rep Power: 4
Madhu Kalyan is on a distinguished road
A 10 x 5 x 30 mm duct has been meshed with an element size of 0.5 mm. The flow cross-section of 50 mm2 has a flow rate of 0.005 kg/s (0.1 m/s) with water as the working fluid. The top and bottom walls have a heat rate of 3W on each of them and the inlet and outlet were made periodic in one case and kept as it is for another. The discretization was second order and the residuals were set to converge at 10-6. The periodic case has a small temperature dip at the beginning and sharp temperature rise at the end. . For reference purpose 300K is set as 0 and the results are displayed accordingly
plane location---Temperature periodic---Temperature non periodic
2___ -0.06254___ 0.01959
4___ -0.04398___ 0.03922
6___ -0.02452___ 0.05871
8___ -0.00506___ 0.078
10___0.0144___ 0.09717
12___0.03386___ 0.11633
14___0.05331___ 0.13554
16___0.07277___ 0.15479
18___0.09223___ 0.17409
20___0.11169___ 0.19342
25___0.16033___ 0.24186
30___0.25352___ 0.28677

Can anybody tell me why this certain trend is happening? This seems to repeat for other cases too.
Madhu Kalyan is offline   Reply With Quote


heat transfer, periodic boundary fluent

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
UDF to change heat transfer coefficient with wall temperature emmkell Fluent UDF and Scheme Programming 18 August 7, 2018 04:44
Multiphase flow - incorrect velocity on inlet Mike_Tom CFX 6 September 29, 2016 02:27
How to set heat transfer coefficient and wall temperature jpina FLUENT 1 March 21, 2016 09:47
Basic Nozzle-Expander Design karmavatar CFX 20 March 20, 2016 09:44
[swak4Foam] Temperature dependent heat transfer coefficient with groovybc P_P OpenFOAM Community Contributions 0 November 5, 2015 21:07

All times are GMT -4. The time now is 06:43.