|
[Sponsors] |
April 5, 2005, 13:59 |
Time step in time explicit solver
|
#1 |
Guest
Posts: n/a
|
I know that Fluent chooses the time step (in an unsteady explicit model) as: CFL Dx /(u+a). But what is exactly Dx? The help says it is the local grid size. What does it mean? Consider that I have a quadrilateral 2D mesh, is it the diagonal? the biggest dimension? To anyone that can help me...Thank you
|
|
August 5, 2009, 10:32 |
|
#2 |
Senior Member
|
The dx is the minimum of cell size
cheers |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Physical Reason for stability of Implicit Schemes? | radhakrishnan | Main CFD Forum | 26 | October 3, 2023 22:05 |
Multiple floating objects | CKH | OpenFOAM Running, Solving & CFD | 14 | February 20, 2019 09:08 |
Hydrostatic Pressure and Gravity | miliante | OpenFOAM Running, Solving & CFD | 132 | October 7, 2012 22:50 |
Full pipe 3D using icoFoam | cyberbrain | OpenFOAM | 4 | March 16, 2011 09:20 |
calculation diverge after continue to run | zhajingjing | OpenFOAM | 0 | April 28, 2010 04:35 |