CFD Online Logo CFD Online URL
Home > Forums > Phoenics

some questions on using unsteady code

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

LinkBack Thread Tools Display Modes
Old   January 25, 2002, 23:22
Default some questions on using unsteady code
Posts: n/a
Dear all, when I do some simulations using transicent code, something puzzled me. Two method I used in the simulations. 1. setting steady=F, and then defining the duration time, the time steps, for example, total duration time is 100s, and number of time steps is 10, and then run the simulations; 2.divide all 100s into 10 parts, run the first time step first till convergency, and then using the result of the first time step as intional conditions, and so on. am I right doing so? if right, why it's easier to get the convergency results by the second method than the first one? can anyone could give any suggestions on simulating of the transcient cases? does it need to convergence each step or only to only give the total number of interations in each time step simply?


  Reply With Quote


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
Looking for 2-D unsteady panel method code Coco Main CFD Forum 5 January 20, 2011 13:49
Unsteady UDF Questions hirokata FLUENT 0 July 8, 2006 13:32
Unsteady incompressible flow in a duct - questions Sam Main CFD Forum 3 February 22, 2006 09:04
correct UDF code for unsteady pressure boundary James W FLUENT 0 November 2, 2005 12:38
Searching for an unsteady boundary layer code Daniele Main CFD Forum 0 September 20, 2004 08:17

All times are GMT -4. The time now is 07:34.