CFD Online Discussion Forums

CFD Online Discussion Forums (
-   CFX (
-   -   Time step problem (

Prateek garg December 24, 2012 04:14

Time step problem
Hi all,

I ran a simulation with for mixing of Jet A vapor and air successfully with time step size of .001 sec for 1 sec. now, i wan to used these results for simulating combustion in new def file I am specifying time step size 1e-06 and total time .001 but everytime It runs only 1 timestep and says run completed normally as simulation time reached. when i gave total time duration of 1 sec and time step size of 1e-06 it runs for 10 timesteps and says the same thing i.e. that simulatiom time reached. in both the cases I am taking initial time 0 sec. does it takes the timestep size from the previous simulation??
Where is the mistake I dont know please help?

cdegroot December 24, 2012 05:50

I am assuming you are continuing your previous run by using Initial Values Specification in Solver manager. If you select "continue history from" then it will continue the time from the previous case. Otherwise time starts back at zero.

Elio December 24, 2012 05:58

Hello guys,
i know this might seem quite dumb, but i do not know how to post a new question on this forum. Any help?
Most appreciated

energy382 December 24, 2012 10:19

just click on "new thread" (the button top left, below CFX). but please choose the right forum for your request.


Prateek garg December 24, 2012 10:21

Time step Problem
@CDEGROOT Thank you very much. It was a great help.

All times are GMT -4. The time now is 20:18.