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

Specify user-defined specific heat for melting problem

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 16, 2024, 08:28
Default Specify user-defined specific heat for melting problem
  #1
New Member
 
Pierluigi Tagliabue
Join Date: Jan 2024
Location: Zurich
Posts: 2
Rep Power: 0
Pierluigi Tagliabue is on a distinguished road
Hi everyone! I am new to this forum, this is my first question to the community, I hope it can be useful to me (and others maybe).

I am simulating a (sodium) melting problem using STAR-CCM+. I am not using any CFD resource of the software, since the idea is to simulate the phase transition using heat conduction equations only to simplify the description of the process.

I am folloing a method for which it would be convenient for me to define a user-defined function for the sodium specific heat. However, when specifying the Physics models in the Continua node, there is no option to insert the specific heat like I would like to. I can only put a table, which is not suitable for me, since it will make the problem prone to numerical instabilities during the melting process because of the strong non-linear nature of the specific heat in the melting region.

The algorithm I would like to implent to solve this issue is the equivalent heat capacity method (AN EFFICIENT ALGORITHM FOR FINITE-DIFFERENCE
ANALYSES OF HEAT TRANSFER WITH MELTING AND
SOLIDIFICATION, J.S. Hsiao).

Any idea on how to define the specific heat using a user-defined function?

Thanks!

Pierluigi
Pierluigi Tagliabue is offline   Reply With Quote

Reply

Tags
melting&solidification, star-ccm+

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 Transfer problem Spartscle28 STAR-CCM+ 1 July 31, 2020 03:59
UDF for Specific Heat - Problem Hamjaj Fluent UDF and Scheme Programming 17 June 17, 2017 02:28
user defined enthalpy for heat exchanger model jackstraw Fluent UDF and Scheme Programming 0 December 23, 2015 04:53
User defined specific heat capacity lost.identity STAR-CD 2 May 17, 2013 01:42
using METIS functions in fortran dokeun Main CFD Forum 7 January 29, 2013 05:06


All times are GMT -4. The time now is 14:58.