|
[Sponsors] |
![]() |
![]() |
#1 |
New Member
Yang
Join Date: Jun 2015
Posts: 25
Rep Power: 11 ![]() |
I know all state variables at air and fuel inlets of chamber (plain cylinder). I enter air flow rate, T, and hydraulic diameter in boundary conditions. Values that FLUENT calculates are way off; i.e. inlet air velocity reference value over 600m/s, which ~matches (wrong) contour results, but actual velocity should be 161m/s. I am sure my calculated initial conditions are correct.
Just started Fluent this week because I have no idea how to solve state variables at end of combustion chamber based on initial with pen and paper. I went through a few Fluent tutorials from SimCafe and other sites but still much guessing. I appreciate anyone that can help with at least somewhat accurate cfd or math to find end conditions, especially velocity and T. |
|
![]() |
![]() |
![]() |
![]() |
#2 |
New Member
Yang
Join Date: Jun 2015
Posts: 25
Rep Power: 11 ![]() |
Nevermind, think I got it. Keep initial pressure constant in hybrid initialization settings and specify velocity for air and fuel inlets. Correct me if I'm wrong.
|
|
![]() |
![]() |
![]() |
Tags |
combustion, compressible flow, initial conditions, ramjet |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
problem with Min/max rho | tH3f0rC3 | OpenFOAM | 8 | July 31, 2019 09:48 |
log file | imani | OpenFOAM Running, Solving & CFD | 0 | July 24, 2014 02:04 |
Why RNGkepsilon model gives floating error | shipman | OpenFOAM Running, Solving & CFD | 3 | September 7, 2013 08:00 |
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 | bookie56 | OpenFOAM Installation | 8 | August 13, 2011 04:03 |
Orifice Plate with a fully developed flow - Problems with convergence | jonmec | OpenFOAM Running, Solving & CFD | 3 | July 28, 2011 05:24 |