|
[Sponsors] |
Solution is converging but have reverse flow on pressure outlet |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
June 20, 2013, 04:14 |
Solution is converging but have reverse flow on pressure outlet
|
#1 |
New Member
Dinesh
Join Date: Nov 2009
Location: India
Posts: 25
Rep Power: 17 |
Dear Friends,
Hi! I am modelling a hydrodynamic journal bearing which is nothing but one cylinder rotating inside a stationary cylinder and there is a fluid flow thru annulus (which is @50 microns). I have modeled rotating member as a shaft(@3000 RPM) and stationary as bearing. The 50 microns lubricant film is meshed into 32 layers. My solution is converging but i am facing reverse flow problem at pressure outlet. Is this reverse flow expected in such cases? or if not how to get rid of it? Thanks in advance |
|
March 10, 2018, 22:29 |
have you solve it ,I meet the same question?
|
#2 |
Member
wan zhihua
Join Date: Dec 2017
Posts: 67
Rep Power: 8 |
have you solve it ,I meet the same question?
|
|
March 11, 2018, 02:02 |
|
#3 |
Senior Member
Hamid Zoka
Join Date: Nov 2009
Posts: 293
Rep Power: 19 |
In a CFD run generally reverse flow happens if the boundaries are so close to the object(hear bearing) such that gradients of flow parameters like pressure are high. Therefore flow reversal happens to meet the preset outlet boundary condition. It seems you need to adjust the outlet boundary. If the amount of reverse flow is quite low and the results are satisfactory there is no need to modify the domain.
|
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
reverse flow in pressure outlet | Thomas Getza | FLUENT | 24 | January 14, 2020 07:17 |
Pressure Driven Supersonic Flow in Converging-Diverging Nozzle | cdm | OpenFOAM Running, Solving & CFD | 7 | August 28, 2019 02:37 |
Compressible flow, no data at the outlet | mireis | FLUENT | 6 | September 3, 2015 03:10 |
pressure outlet (open channel flow) | Willem Brantegem | Main CFD Forum | 0 | April 3, 2007 10:39 |
pressure outlet BC for incompressible flow | khaiching | Main CFD Forum | 6 | October 15, 2005 03:58 |