CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CCM+

User Defined Energy distribution for Lagrangian phase

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 3, 2017, 21:29
Default User Defined Energy distribution for Lagrangian phase
  #1
Member
 
Robert
Join Date: Sep 2016
Posts: 32
Rep Power: 7
dussa is on a distinguished road
Hi everyone,

I am looking a the effect of flow through a packed bed of spherical pebbles within a cylindrical container. I have successfully solved the pressure drop across the packed bed for the isothermal case and am now interested in energy models for the system.

In particular I am interested in the generation of heat within the spherical particles themselves. I have found the models under the Lagrangian Phase node that include Energy, and User-defined Energy Source, however it appears that the User-defined energy can only be a single value for all the particles in the system. I would like to have the energy density of a particle vary depending on the location of the pebble within the container (both radially and axially) ie hotter particles in the middle of the particle bed.

Has anyone had any experience with this or know if this is even possible?

Regards,

Rob
dussa is offline   Reply With Quote

Old   September 11, 2017, 08:51
Default
  #2
Senior Member
 
Ping
Join Date: Mar 2009
Posts: 555
Rep Power: 17
ping is on a distinguished road
i assume you would be using dem particles for this and then adding user energy option to that phase is possible and it can be set by field function or table as well as a constant.
so you can define an elaborate equation in a field function to do what you need and i tested this in 12.04
ping is offline   Reply With Quote

Old   March 29, 2020, 08:38
Default
  #3
New Member
 
Zhujb
Join Date: Mar 2020
Posts: 1
Rep Power: 0
Hechengshuo is on a distinguished road
change the constant into field function at the user-defined energy source options, choose the appropriate function.
I think you are studying the high temperature gas cooled reactor. Is it right?
Hechengshuo is offline   Reply With Quote

Old   March 29, 2020, 23:56
Default
  #4
Member
 
Robert
Join Date: Sep 2016
Posts: 32
Rep Power: 7
dussa is on a distinguished road
Quote:
Originally Posted by Hechengshuo View Post
change the constant into field function at the user-defined energy source options, choose the appropriate function.
I think you are studying the high temperature gas cooled reactor. Is it right?

No that is not what I am studying
dussa is offline   Reply With Quote

Reply

Tags
dem, energy, lagrangian, two-way coupling

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
User defined memory value changing minhoabc FLUENT 2 June 22, 2017 07:28
OpenFOAM static build on Cray XT5 asaijo OpenFOAM Installation 9 April 6, 2011 13:21
ATTENTION! Reliability problems in CFX 5.7 Joseph CFX 14 April 20, 2010 16:45
add user scalar in one phase zhu CFX 0 April 27, 2002 04:45
CFX 5.5 Roued CFX 1 October 2, 2001 17:49


All times are GMT -4. The time now is 07:39.