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

Problems about phase-change simulation inside a heat pipe

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 8, 2014, 20:59
Question Problems about phase-change simulation inside a heat pipe
  #1
Senior Member
 
Bill Wang
Join Date: Aug 2014
Posts: 109
Rep Power: 12
6863523 is on a distinguished road
Dear guys,
I am simulating the phase change phenomenon inside a flat heat pipe using cavitation model in fluent software. But the results are not desirable as seen athttp://www.cfd-online.com/Forums/mem...r+chamber.html
The temperature inside the heat pipe is wired. The distribution should be like this, the lowest temperature shows up at the heat outlet, the highest temperature appears at the heat inlet, and the temperature in the channel should be in between.
Any suggestions would be appreciated. Thank you.
6863523 is offline   Reply With Quote

Old   October 10, 2014, 23:37
Default
  #2
Senior Member
 
Bill Wang
Join Date: Aug 2014
Posts: 109
Rep Power: 12
6863523 is on a distinguished road
No one interested? I am waiting
6863523 is offline   Reply With Quote

Old   October 14, 2014, 10:30
Default
  #3
Member
 
amine
Join Date: Jan 2014
Location: FRANCE
Posts: 84
Rep Power: 12
aminem is on a distinguished road
I have done some similar simulation, can you give some details (physics, boundary condition,...) about your simulation
aminem is offline   Reply With Quote

Old   October 14, 2014, 10:37
Default
  #4
Senior Member
 
Bill Wang
Join Date: Aug 2014
Posts: 109
Rep Power: 12
6863523 is on a distinguished road
I do not know how to upload the pictures that I need to show you.
My email is 815719752@qq.com , just for convinient.
Thank you for your reply.
6863523 is offline   Reply With Quote

Old   October 14, 2014, 10:44
Default
  #5
Member
 
amine
Join Date: Jan 2014
Location: FRANCE
Posts: 84
Rep Power: 12
aminem is on a distinguished road
you have manage attachement button at the end of page
aminem is offline   Reply With Quote

Old   October 14, 2014, 10:50
Default
  #6
Senior Member
 
Bill Wang
Join Date: Aug 2014
Posts: 109
Rep Power: 12
6863523 is on a distinguished road
Dear amine,
I sent you an email via this forum. I wonder if you have received. I am sorry to disturb you without asking for permission.
I am simulating the evaporation of liquid water and condensation of water vapor now. I patched two rigions, one was for liquid water in the wick and the other was for vapor. Evaporation occurs at the wick-vapor surface due to the heat inlet nearby.
Sorry,I did not found the attachment button on this pape.
Best Regards,
Bill
6863523 is offline   Reply With Quote

Old   October 14, 2014, 10:59
Default
  #7
Member
 
amine
Join Date: Jan 2014
Location: FRANCE
Posts: 84
Rep Power: 12
aminem is on a distinguished road
Try to decrease your time step to have good convergence. In your picture you finish simulation at 1.5s I think it's not sufficient
aminem is offline   Reply With Quote

Old   October 14, 2014, 11:07
Default
  #8
Senior Member
 
Bill Wang
Join Date: Aug 2014
Posts: 109
Rep Power: 12
6863523 is on a distinguished road
Dear amine,
The picture you have seen is not finished yet. I have run the simulation for about 13s and it converged, but the temperature distribution is not good as can be seen at http://www.cfd-online.com/Forums/mem...ults+pics.html
6863523 is offline   Reply With Quote

Reply

Tags
cavitation, condensation, evaporation, flat heat pipe

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
Heat pipe simulation with phase change mecman OpenFOAM Running, Solving & CFD 10 May 8, 2020 04:42
Heat pipe simulation bensonnggl CFX 17 September 3, 2017 21:42
simulation of heat pipe (evaporation part) DanielLai FLUENT 0 November 5, 2011 11:26
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 10:11
help needed about phase change Yanhu Guo Main CFD Forum 4 January 24, 2001 00:16


All times are GMT -4. The time now is 09:04.