|
[Sponsors] |
March 18, 2014, 22:31 |
Ceiling Fan in Room
|
#1 |
New Member
L.Bryce Whitson Jr.
Join Date: Jun 2011
Posts: 18
Rep Power: 14 |
I am trying to set up a ceiling fan in a room with no windows or doors. The basic geometry is a square room of dimension L, W, H with a uniform mesh using blockMesh. I then utilize the createBaffles utility to make a single baffle in the center of the room to act as my fan. I copied the createBaffles dictionary from the heatTransfer/TJunctionFan tutorial and utilized this as a square ceiling fan. I then use buoyantSimpleFoam to solve the problem for 2000 iterations.
The problem I run into is that the flow through the baffle is not consistent and is completely checkerboarded. In one spot the flow will be upwards and in another it will be downwards. I would think that it would all be in the direction of the pressure jump. Any thoughts on this or could I possibly be doing something wrong? I will try and post my case file in the morning of the problem. |
|
May 3, 2014, 15:52 |
you need a cellset which is cylindrical
|
#2 |
Member
Join Date: Oct 2013
Posts: 92
Rep Power: 12 |
I hope you have a cylindrical rotating domain AMI (or baffle),
for the shape to be cylindrical you need an outer cylindrical cellset and also check the directionality of rotation (clock-wise or anti-clockwise) |
|
May 4, 2014, 13:51 |
|
#3 |
Senior Member
Andrew Somorjai
Join Date: May 2013
Posts: 175
Rep Power: 12 |
I might be wrong about this but AMI only works with pimpleDymFoam and not buoyantPimpleFoam, right?
|
|
May 4, 2014, 15:40 |
|
#4 |
Member
Join Date: Oct 2013
Posts: 92
Rep Power: 12 |
oh, sorry. I thought you were doing moving mesh.
AMI(mesh movement) works with only 'DyM' solvers. still you need a cellset to define the cylindrical part. one approach is MRF, which doesn't include mesh movement, through fvOptions. |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
How to simulate a simple fan inside a room ? | rafiktharwat | CFX | 10 | September 23, 2014 03:51 |
Fan Rotation in a empty room, | Ozora | FLUENT | 0 | December 18, 2013 04:40 |
Fan Coil in a Room | Bionico | FLUENT | 0 | April 11, 2013 11:56 |
simulation of ceiling fan | Raj | FLUENT | 0 | October 3, 2008 06:21 |
Modelling Ceiling Fan | suitto | FLUENT | 1 | March 21, 2000 12:46 |