|
[Sponsors] |
Lagrangian Boundary Condition: interstitialInletVelocity |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
March 14, 2014, 02:27 |
Lagrangian Boundary Condition: interstitialInletVelocity
|
#1 |
Senior Member
|
Hello Foamers,
I have a question about interstitialInletVelocity inlet BC which is used in lagrangian/MPPIC/Goldschemidt testcase. Code:
bottom { type interstitialInletVelocity; inletVelocity uniform (0 0 1.875); value uniform (0 0 1.875); phi phi.air; alpha alpha.air; } in its .h description it says: HTML Code:
Description Inlet velocity in which the actual interstitial velocity is calculated by dividing the specified inletVelocity field with the local phase-fraction. I calculated average alpha.air magnitude in this patch = 0.42 and understood that 4.8 m/s=2.0/0.42 as described in .h file. Seeing the contour of inlet in this condition shows the magnitude of air varies between 4 to 6.51 m/s with the average of 4.89 (is attached) and I don't know why it increases the stated 2 m/s to higher magnitudes. If it considers the solid fractions in inlet patch so it should be some zero magnitude velocities on inlet but there is not seen. |
|
March 23, 2014, 13:29 |
|
#2 | |
Retired Super Moderator
Bruno Santos
Join Date: Mar 2009
Location: Lisbon, Portugal
Posts: 10,975
Blog Entries: 45
Rep Power: 128 |
Greetings Maysam,
If you take a look into the C file: Quote:
Best regards, Bruno
__________________
|
||
March 9, 2016, 17:09 |
|
#3 |
Senior Member
Join Date: Jan 2013
Posts: 372
Rep Power: 14 |
Dear Bruno,
This boundary condition 'interstitialInletVelocity' is used in the lagrangian and multiphase solvers: Code:
lagrangian/MPPICFoam/Goldschmidt/0/U.air:40: type interstitialInletVelocity; lagrangian/DPMFoam/Goldschmidt/0/U.air:40: type interstitialInletVelocity; multiphase/reactingTwoPhaseEulerFoam/laminar/fluidisedBed/0/U.air:25: type interstitialInletVelocity; multiphase/reactingTwoPhaseEulerFoam/RAS/fluidisedBed/0/U.air:25: type interstitialInletVelocity; multiphase/twoPhaseEulerFoam/laminar/fluidisedBed/0/U.air:25: type interstitialInletVelocity; OFFO |
|
March 13, 2016, 11:58 |
|
#4 | ||||
Retired Super Moderator
Bruno Santos
Join Date: Mar 2009
Location: Lisbon, Portugal
Posts: 10,975
Blog Entries: 45
Rep Power: 128 |
Quick answers:
Quote:
Quote:
Quote:
Quote:
__________________
|
|||||
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
sliding mesh problem in CFX | Saima | CFX | 46 | September 11, 2021 07:38 |
Boundary condition not met, although fully converged | Zerzura | FLUENT | 0 | January 20, 2016 04:21 |
Wrong flow in ratating domain problem | Sanyo | CFX | 17 | August 15, 2015 06:20 |
Radiation interface | hinca | CFX | 15 | January 26, 2014 17:11 |
An error has occurred in cfx5solve: | volo87 | CFX | 5 | June 14, 2013 17:44 |