|
[Sponsors] |
October 23, 2017, 04:15 |
transient simulation
|
#1 |
New Member
Noman Hafeez
Join Date: Jul 2017
Posts: 6
Rep Power: 8 |
how we can decide that the simulation will be transient or steady state? i am modeling a turbine and i need to know that what is the main difference b/w steady and transient state modeling in terms of physics???/
|
|
October 23, 2017, 05:35 |
|
#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,728
Rep Power: 143 |
Mathematically: For a steady state run the time derivative of all variables tends to zero. Transient runs have non-zero time derivatives.
Practically: A converged steady run is the same forever and never changes. Transient runs keep changing. Simulations: A steady state run will converge if simulated by a steady state or a transient run (as the transient run will just converge to the steady solution). A transient run will only converge if simulated transient, and will not converge if simulated steady state. |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Continuing transient simulation after steady simulation | billy7590 | FLUENT | 0 | September 19, 2017 08:56 |
Transient RANS Simulation | Bazinga | Main CFD Forum | 5 | June 21, 2017 11:21 |
Transient simulation diverges | Graduation | ANSYS | 0 | February 28, 2012 07:13 |
How to integrate variable in a transient simulation? | nprace | CFX | 4 | January 9, 2012 08:59 |
Beginning a Transient Simulation | Norflow | CFX | 2 | October 7, 2011 00:38 |