|
[Sponsors] |
residual vibration in nozzle and diffuser simulation |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
January 21, 2022, 03:20 |
residual vibration in nozzle and diffuser simulation
|
#1 |
New Member
joomi lee
Join Date: Oct 2021
Posts: 3
Rep Power: 4 |
A nozzle and diffuser simulation are in progress.
nozzle.JPG residual is vibrate. residual vibration.JPG I'm using the k-w SST turbulence model, Courant number 0.7 and pressure-inlet condition. what is wrong?? and how to fix it?? help me..... :-( |
|
January 21, 2022, 04:06 |
|
#2 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 |
physics of that flow is not steady.
residuals oscillating is essential here. you may reduce residuals simulating in transient
__________________
best regards ****************************** press LIKE if this message was helpful |
|
January 21, 2022, 14:05 |
|
#3 |
Senior Member
Lorenzo Galieti
Join Date: Mar 2018
Posts: 375
Rep Power: 12 |
Yes, personal experience, to converge this nozzle flow you need to run the unsteady solver.
You didn't make any blatant mistake so far |
|
Tags |
diffuser, fluent, nozzle, residual, vibration |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Turbulent compressible flow in a pipe with diffuser and nozzle | denispansolin | FLUENT | 2 | October 8, 2019 13:15 |
compressible, rhoSimpleFoam, multi-species, steady state, rocket nozzle | David_C | OpenFOAM Running, Solving & CFD | 1 | April 18, 2017 11:01 |
Diffuser Multiphase Simulation | AS_Aero | CFX | 0 | April 11, 2017 12:31 |
Simulation of a Subsonic diffuser | Hello_Fluent | FLUENT | 0 | February 2, 2017 09:15 |
Swirling Flow through nozzle and diffuser, NonlinearKEShih model | Phil_ | OpenFOAM Running, Solving & CFD | 0 | July 10, 2014 04:04 |