CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Explicit calculation issue

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 19, 2009, 19:34
Unhappy Explicit calculation issue
  #1
Senior Member
 
Join Date: Apr 2009
Posts: 118
Rep Power: 17
lost.identity is on a distinguished road
Hi,

I'm trying to run an unsteady calculation using the explicit method using an inhouse CFD code. The problem is when I use explicit my time step size is very small (of the order of -12). So it is taking a very long to to achieve the required simulation time.

I can't seem to find a bad cell which might give such a small time step and I want to use Tecplot to show me the local timestep (assuming CFL=1) for all the grid points, i.e. I want to read in a steady flow result of the same geometry in Tecplot and then calculate the the timestep size using the flow speed, mesh size and CFL=1.

Is it possible to do this in Tecplot? Or does anyone know of a better method to achieve this?

Thanks in advance.
I.
lost.identity is offline   Reply With Quote

Reply

Tags
explicit, tecplot, unsteady


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
Mixing elbow case water heat transfer calculation buoyantFoam benyamin1 OpenFOAM Running, Solving & CFD 0 January 14, 2006 09:25
Warning 097- AB Siemens 6 November 15, 2004 04:41
Rotation flow calculation Christian Main CFD Forum 5 April 3, 2003 13:19
Heat Flux Calculation under REPORTS Alberto Schroth FLUENT 0 May 16, 2000 08:19
Channel LES and explicit filtering Luca Liberti Main CFD Forum 0 January 17, 1999 10:07


All times are GMT -4. The time now is 09:18.