 |
 |
 |
|
|
|
[Sponsors] | ||||
pathline difference in fan for 1 order and 2 order scheme |
 |
|
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
August 25, 2013, 12:07
|
pathline difference in fan for 1 order and 2 order scheme
|
#1 |
|
New Member
thomasesel
Join Date: Jul 2009
Posts: 13
Rep Power: 17  |
Hi, I am trying to simulate a fan. In my case, the full 3D fan is modeled with the casing together.
The upstream of the fan is an air chamber and set as pressure inlet 0 Pa. the downstream is set as pressure outlet 0 Pa. The rotating fan is set as MRF. SST model is used. At first, the rotating speed is increased step by step, the first order upwind for k, omega and momentan equations and 10 times smaller under relaxation factor are used. The pathlines are reasonable, figure 1. Then, the calculation runs under 2 order upwind, but the pathlines are greatly differnce from the figure 1, s. figure 2. It seems the blowing of the fan does not continue. Can anyone tell me the possible reasons for the simulations? Thank you in advance! |
|
|
|
|
|
August 27, 2013, 16:31
|
|
#2 |
|
New Member
thomasesel
Join Date: Jul 2009
Posts: 13
Rep Power: 17 |
does anyone have an idea?
thank you! |
|
|
|
|
|
|
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| how to understand high resolution scheme and high order scheme | iilw1314 | Main CFD Forum | 7 | April 12, 2022 13:29 |
| Difference between first order and second order | msatrustegui | FLUENT | 2 | December 5, 2012 06:54 |
| 2nd order boundary conditions for 2nd order discretization? | quarkz | Main CFD Forum | 30 | December 26, 2011 08:12 |
| 2nd order upwind scheme (Fluent and CFX) | Far | FLUENT | 0 | May 22, 2011 02:50 |
| High order difference scheme for KIVA3v2??? | LiQiang | Main CFD Forum | 1 | May 9, 2005 14:50 |
Linear Mode
