|
[Sponsors] |
May 6, 2016, 07:28 |
Turbulence at the inlet boundary in CFX
|
#1 |
Member
Mujahid Badshah
Join Date: Oct 2015
Posts: 32
Rep Power: 10 |
Hi all,
I am modeling water flow over a circular plate placed in a rectangular channel. I have measured data and turbulence intensity profile curve (image attached). Can any body guide me on how to specify this turbulence intensity at the inlet boundary. Is it possible for CFX to read this data Of turbulence intensity from a CSV file or the turbulence intensity will have to be converted into a .csv file of k and epsilon |
|
May 6, 2016, 15:14 |
|
#2 |
Senior Member
Join Date: Jun 2009
Posts: 1,804
Rep Power: 32 |
You should be able to use a .csv file with a column name "Fractional Intensity" or for clarity "Turbulence Intensity". For the latter one, you must map the name to the Fractional Intensity parameter such that the software can pair the column in the .csv file to the boundary condition setting. Otherwise, you must write the function yourself.
|
|
May 14, 2016, 11:17 |
|
#3 |
Member
Mujahid Badshah
Join Date: Oct 2015
Posts: 32
Rep Power: 10 |
Hi Opaque,
Thanks a lot for your reply. Kindly make it a bit more clear for me. At the inlet boundary in boundary detail tab, In the turbulence option, I selected "intensity and auto compute length scale" and in the fractional intensity, I selected the user function that I created from the .csv file of the fractional intensity. But it gives an error message of Bad expression value 'TI()' detected in parameter 'Fractional Intensity' in object '/FLOW:Flow Analysis 1/DOMAIN:fluid domain/BOUNDARY:inlet/BOUNDARY CONDITIONS/TURBULENCE'. CEL error: The following unrecognised name was referenced: TI. Please help. Thanking in advance |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Inlet boundary conditions for turbulence changing | robboflea | FLUENT | 6 | April 7, 2022 14:37 |
sliding mesh problem in CFX | Saima | CFX | 46 | September 11, 2021 07:38 |
Centrifugal fan | j0hnny | CFX | 13 | October 1, 2019 13:55 |
Velocity vector in impeller passage | ngoc_tran_bao | CFX | 24 | May 3, 2016 21:16 |
Wrong flow in ratating domain problem | Sanyo | CFX | 17 | August 15, 2015 06:20 |