|
[Sponsors] |
September 5, 2012, 03:00 |
Steady and unsteady solver
|
#1 |
New Member
NGH
Join Date: May 2011
Posts: 15
Rep Power: 14 |
Hi
Can someone one advise me on the differences in the steady and unsteady solver for fluent? How do we know which one to choose and will there be any differences in the results? Also are there any special circumstances when we must use unsteady solver? Thanks |
|
September 8, 2012, 08:29 |
|
#2 |
Senior Member
|
In most situations in fluid dynamics flows are unsteady. E.g. flow past cylinder is (except small Re) is always unsteady and its averaging does not make sence. In such case we have no choice but use unsteady solver.
Unstedy solver is also used for Large Eddy Simulations or Direct Numeric Simulations of turbulence, even if the average flow is steady. Steady solver is usualy used for calculation of laminar steady flows or stationary flows with modelled turbulence: e.g. flows past streamlined bodies before stalling, internal flows etc. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Unsteady DPM with steady solver | elobb | FLUENT | 4 | December 16, 2021 03:54 |
Problem with implicit unsteady solver | CCMuser | STAR-CCM+ | 2 | March 3, 2010 11:20 |
Steady and unsteady solver | sam thompson | FLUENT | 1 | April 20, 2006 12:39 |
steady solver as initial guess for unsteady flow | Muhammad Shakaib | FLUENT | 1 | December 7, 2005 12:58 |
steady or unsteady? (in dpm) | winnie | FLUENT | 1 | April 28, 2003 11:30 |