|
[Sponsors] |
September 10, 2019, 15:17 |
Fully developed flow and convergance
|
#1 |
Member
Soumitra Vadnerkar
Join Date: Aug 2018
Posts: 70
Rep Power: 8 |
What is connection between a fully developed flow and its convergence?
Can I say, in case of simple flow through pipe scenario, a converged steady state solution would always yield a fully developed flow at the outlet? Also do you think the attached image of velocity contour can represent a fully developed flow till the time it reaches the outlet? https://postimg.cc/Dmf1r3hb |
|
September 10, 2019, 16:33 |
|
#2 | |
Super Moderator
Alex
Join Date: Jun 2012
Location: Germany
Posts: 3,427
Rep Power: 49 |
Quote:
So if the computational domain is not long enough for the flow to be fully developed, you won't get a fully developed flow at the outlet, no matter how good the numerical convergence is. Unless of course you prescribed fully developed conditions at the inlet The easy way to ensure a fully developed flow would be periodic boundary conditions. |
||
September 11, 2019, 10:23 |
|
#3 |
New Member
Join Date: Jan 2015
Posts: 19
Rep Power: 11 |
"Fully developed" is a property of a physical flow at hand while "convergence" is a property of a numerical solution. The two have literally nothing to do with each other.
|
|
September 11, 2019, 10:50 |
|
#4 |
Member
Soumitra Vadnerkar
Join Date: Aug 2018
Posts: 70
Rep Power: 8 |
Yeah but, I thought that as velocity profile does not change further, it might be helping for convergence.
|
|
Tags |
convergance, fully developed flow, velocity profile |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
K Epsilon convergance issue | Ollie | OpenFOAM | 2 | April 18, 2011 09:28 |
Inviscid Flow Convergance issues | FormulaRacer | Siemens | 1 | November 19, 2010 15:18 |
Free Surface Problem - Convergance | Toby | FLUENT | 0 | July 3, 2008 00:16 |
Second order convergance. | Rob | FLUENT | 2 | July 20, 2004 11:49 |
mass convergance | subhash | Siemens | 2 | September 9, 2002 02:14 |