CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

Step function

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

LinkBack Thread Tools Search this Thread Display Modes
Old   May 23, 2011, 10:23
Default Step function
New Member
Join Date: May 2011
Posts: 4
Rep Power: 13
ragazzaccio79 is on a distinguished road
Dear all,

a very simple question about step function in CFX... sorry but i don't remember how to use it.

I am running a transient simulation and I need to impose a variable temperature at a wall domain as a function of time.

I need to set up an expression for temperature such that:

Temperature= 25 from 0sec up to 10sec included
Temperature= 40 from 11sec up to 20sec included
Temperature= 60 from 21sec up to 35sec included
Temperature= 100 from 36sec up to 60sec (60sec is the end of transient simulation)

Many thanks for your help.

Kind regards
ragazzaccio79 is offline   Reply With Quote

Old   May 23, 2011, 20:01
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,321
Rep Power: 138
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
You can generate this using step or if functions in CEL but it is easier to set up a function like this as a 1D interpolation function. Make it a function of time and use the function to set the temperature.
ghorrocks is offline   Reply With Quote


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
Help to create a CEL expression for Step function anirudster CFX 25 January 11, 2018 00:41
wall function UDFs...step gina Fluent UDF and Scheme Programming 7 June 2, 2009 15:04
Can anybody help me to solve the list errors while compiling Openfoam 15 on Opensuse 103 32bit coompressor OpenFOAM Installation 0 November 12, 2008 20:53
time step size in Custom Field Function Tong FLUENT 0 May 2, 2008 16:51
step function John CFX 4 October 20, 2005 01:39

All times are GMT -4. The time now is 08:11.