|
[Sponsors] |
Simulating a fan without any inlet/outlet B.C. information |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
October 10, 2019, 02:37 |
Simulating a fan without any inlet/outlet B.C. information
|
#1 |
New Member
Mehmet
Join Date: Feb 2019
Location: mhmt.ozden@yandex.com
Posts: 23
Rep Power: 7 |
How can I simulate a fan inside a room without knowingt boundary conditions of inlet and outlet such as velocity, mass flow rate and pressure ?
Thanks in advance. |
|
October 10, 2019, 11:37 |
|
#2 |
Senior Member
Jonas T. Holdeman, Jr.
Join Date: Mar 2009
Location: Knoxville, Tennessee
Posts: 128
Rep Power: 18 |
You must specify SOMETHING as a boundary condition. When I look at ceiling fans at the store, the one specification always given is the flow rate. The flow rate can be specified by the difference in stream function across the blades in 2D or the line integral of the tangential component of the vector potential around the blades in 3D. No velocity or pressure drop is needed. About 10 years ago I modeled 2D flow in a room with an obstacle on the floor with a generic fan as a simple example. The result is shown in the attached figure. I have not tried the fan example in 3D, but have used the line integral to control flow in a 3D duct.
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Modeling a Fan by the Multiple reference frame (MRF) method in CFX. | saisanthoshm88 | CFX | 11 | February 17, 2021 11:30 |
How to build current blower fan model in Flotherm | eric0722 | FloEFD, FloWorks & FloTHERM | 3 | January 2, 2021 02:36 |
Centrifugal fan as a momentum source | siw | CFX | 3 | August 20, 2015 05:48 |
Question) fan simulation & B.C | Serazio | FLUENT | 0 | February 7, 2011 13:27 |
information about fan model | greeneye | FLUENT | 0 | November 5, 2009 05:25 |