|
[Sponsors] |
Convergence issue on Solar chimney simulation |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
November 19, 2012, 18:00 |
Convergence issue on Solar chimney simulation
|
#1 |
New Member
Join Date: Nov 2012
Posts: 7
Rep Power: 14 |
Hello Every body
I'm modeling a solar chimney power plant by Fluent . I use fluent to solve The Steady-state problem . my Bcs are pressure inlet (=0) and Pressure outlet ( =0 ) and use S2S radiation model to simulate . I see that the residuals don't converge . I have changed urf of Energy to 0.5 , doesn't help ; momentum to 0.2 ; doesn't help and dissipation rate to 0.5 ; doesn't help . the residuals of velocity are under 10^-3 energy about 10^-5 epsilon about 10^-3 and k between 10-3 and 10-4 . I am monitoring my Velocity on a special plane and see that it fluctuates between 11.1 and 11.7 . for my problem , the order ( 1.1 * 10^1 m/s ) is rational and sufficient but I'm not sure is the solution reliable ? I've used k-e RNG model ( becuase I think Re number is Low , and RNG responses better . is it right ? ) |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[Commercial meshers] meshing a 3D solar chimney | kasool | OpenFOAM Meshing & Mesh Conversion | 0 | November 27, 2010 13:24 |
convergence issue | Rohit Kumar Batra | CFX | 1 | March 27, 2008 18:43 |
convergence for an Unsteady simulation | Palani Velladurai | FLUENT | 1 | March 19, 2007 11:56 |
Convergence issue | Omer | CFX | 2 | March 7, 2007 11:37 |
CFX-Solver, issue with convergence behavior | Andy | CFX | 7 | September 5, 2006 04:24 |