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

thermal stratification of a water container

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 5, 2015, 03:54
Default thermal stratification of a water container
  #1
Member
 
pkladisios
Join Date: Jul 2015
Posts: 39
Rep Power: 2
pkladisios is on a distinguished road
A large container is partially filled with water. The rest is occupied by air. For reasons of simplicity we assume a steady heat flux on the top surface (solar load) and a general convection that takes place on all surfaces. I want to model the thermal stratification that will take place within the container. I haven't found anything similar so far. Which analysis system would be more suitable? I tried using CFX (ansys 16) but i keep getting weird temperatures.
pkladisios is offline   Reply With Quote

Old   August 5, 2015, 20:04
Default
  #2
Senior Member
 
Join Date: Apr 2014
Location: Australia
Posts: 322
Rep Power: 4
Kapi is on a distinguished road
Hi pkladisios,

I reckon you have to use CFX to model it.
You mite be getting weird temperature cuz you have not set boundary condition right.
I suggest ask this question in CFX Forum rather than General ANSYS forum.
Also in the search bar above type " stratification" and you will find similar not same threads to get idea how to set up boundary.

Cheers
KAPI
Kapi is offline   Reply With Quote

Old   August 6, 2015, 05:02
Default
  #3
Member
 
pkladisios
Join Date: Jul 2015
Posts: 39
Rep Power: 2
pkladisios is on a distinguished road
First of all, thank you for taking your time to answer. Is CFX capable of taking into consideration the thickness of the tank and the thermal exchange with the environment? Searching for stratification yielded me no results, for in all cases tank walls were adiabatic.
pkladisios is offline   Reply With Quote

Old   August 6, 2015, 18:51
Default
  #4
Senior Member
 
Join Date: Apr 2014
Location: Australia
Posts: 322
Rep Power: 4
Kapi is on a distinguished road
HI pkladisios,

I have never used tank thickness in CFX model but I am sure you can use tank thickness for heat transfer.
As I said, askng question in CFX forum will really help.

Cheer
KAPI
Kapi is offline   Reply With Quote

Reply

Tags
ansys, cfx, stratification

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
Setting the height of the stream in the free channel kevinmccartin CFX 10 July 9, 2015 21:36
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
IAPWS water properties + orthotropic thermal conductivity Chander CFX 1 February 29, 2012 18:26
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
uptodate water distribution network fredius,magige,tanzanian,(e.a) Main CFD Forum 0 January 27, 2002 08:10


All times are GMT -4. The time now is 09:48.