|
[Sponsors] |
April 5, 2011, 22:22 |
Aerospike flow 3rd order
|
#1 |
New Member
Join Date: Apr 2011
Posts: 5
Rep Power: 15 |
I have a few questions concerning a 1st and 3rd order 'solution'. Below is a pic of my grid (~2.2 million):
I first wanted to solve for a 1st order solution with a pressure inlet and pressure outlet and laminar turb as a simple starting point. My question about the 1st order solution is about the convergence. Is is typical for the 'other' velocities to not converge to a low value like shown in the pic below? Even the other values converge to only ~10-2: Here is a pic of the mach contour: The residuals didn't converge to a low number but the flow looks right and the mass flux balances correctly. |
|
April 5, 2011, 22:25 |
|
#2 |
New Member
Join Date: Apr 2011
Posts: 5
Rep Power: 15 |
When I use the first order case to start the 3rd order solution (3rd order MUSCL), the flow becomes unstable at the outlet boundary, is this typical of a higher order solution (problems near the boundary)?
Can anyone help me out with what I'm doing wrong? |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
IS calc. with 2nd order discret. always necessary? | Azman | FLUENT | 2 | March 14, 2013 04:28 |
Mass flow and U-Mom flow in CFX | Zhihua Xie | CFX | 0 | September 3, 2007 09:49 |
Can 'shock waves' occur in viscous fluid flows? | diaw | Main CFD Forum | 104 | February 16, 2006 05:44 |
Help: Poiseulle flow benchmariking | Mohammad Kermani | Main CFD Forum | 1 | November 12, 1999 16:15 |
Question on 3D potential flow | Adrin Gharakhani | Main CFD Forum | 13 | June 21, 1999 05:18 |