CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

Verify inlet velocity boundary condition

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 22, 2021, 07:07
Default Verify inlet velocity boundary condition
  #1
New Member
 
Justine
Join Date: Jun 2021
Posts: 1
Rep Power: 0
Justine is on a distinguished road
Hii,

In my UDF file I have defined an inlet velocity profile where the maximum velocity = 0.8.

I am doing a system coupling simulation (transient structural + fluid fluent). The simulation is done, but now I want to verify my boundary conditions.

In the results tab from Fluent, I plotted the XY-velocity profile. However, the maximum here is not 0.8 [m/s] (see image).

Code:
 F_PROFILE(f, thread, position) =para_vel*sin(3*Pi *current_time);
In the code para_vel equals 0.8

I added the figure that I have in CDF-post. Furthermore, what is the difference between 'Series 1 for FFF', 'Series 1 for FFF 1 0000.dat', and 'Series 1 for FFF 1 0005.dat'. I thought that 0000.dat would give me the initial situation, but from what I can see it shows just a flat velocity profile. I have never worked with Ansys before, and I couldn't find the answer on the internet.

Hope that someone can help
Attached Images
File Type: jpg qAnsys.jpg (88.9 KB, 5 views)
Justine is offline   Reply With Quote

Old   June 23, 2021, 02:05
Default
  #2
Senior Member
 
Martin_Sz's Avatar
 
Marcin
Join Date: May 2014
Location: Poland, Swiebodzin
Posts: 271
Rep Power: 13
Martin_Sz is on a distinguished road
thats profile looks physically good You must recheck Your udf equation step by step
__________________
Quick Tips and Tricks, Tutorials FLuent/ CFX (CFD)
https://howtooansys.blogspot.com/
Martin_Sz is offline   Reply With Quote

Reply

Tags
boundary condition, system coupling, velocity profile

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Table bounds warnings at: END OF TIME STEP CFXer CFX 4 July 16, 2020 23:44
How to set a swirling inlet velocity boundary condition sunyuze0806 OpenFOAM 0 June 16, 2020 02:13
UDF: Change boundary condition. Velocity inlet to pressure inlet at time "t" jpina FLUENT 10 April 11, 2015 14:19
Question about heat transfer coefficient setting for CFX Anna Tian CFX 1 June 16, 2013 06:28
Velocity inlet boundary condition for porous medium Chander CFX 3 March 11, 2012 21:18


All times are GMT -4. The time now is 15:22.