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

[Other] Setting up time steps for transient thermal analysis on mechanical

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 18, 2013, 05:29
Smile Setting up time steps for transient thermal analysis on mechanical
  #1
New Member
 
Join Date: Jul 2013
Location: France
Posts: 2
Rep Power: 0
TD07 is on a distinguished road
Good morning dear community,

I am trying to model a transient heat transfert problem ; a pipe, containing some water at 20°C (initially) is heated with a wire fixed on its side. Around the pipe and the wire, i put a layer of insulating material. I want to run a simulation that would last for at least 3 hours to see how fast the fluid is getting heated up. However, it seems that mechanical does not allow me to set a time step greater than 1, which means i have to run 10800 iterations (1 for each second).

Also, i ve tried to get around this problem by reducing the number of -sub-increment which is set to 100 by step (defaut value) to 1, but i have to specify it manually for all the 10800 steps, which is a waste of time.

Can anyone here please tell me how to increase the time step beyond 1s or tell me how to change the number of sub-increment for all steps at the same time ?

Thank you
TD07 is offline   Reply With Quote

Reply

Tags
increment, step, thermal, time, transient

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
High Courant Number @ icoFoam Artex85 OpenFOAM Running, Solving & CFD 11 February 16, 2017 14:40
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
How to write k and epsilon before the abnormal end xiuying OpenFOAM Running, Solving & CFD 8 August 27, 2013 16:33
Could anybody help me see this error and give help liugx212 OpenFOAM Running, Solving & CFD 3 January 4, 2006 19:07
Warning 097- AB Siemens 6 November 15, 2004 05:41


All times are GMT -4. The time now is 01:56.