|
[Sponsors] |
Post-Processing Results for Velocity Profiles |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
October 25, 2012, 23:21 |
Post-Processing Results for Velocity Profiles
|
#1 |
Senior Member
Ovi
Join Date: Oct 2012
Location: Sydney, Australia
Posts: 166
Rep Power: 14 |
Hello Everyone,
This is my first post here so I will try my best to describe the problem. I should be able to post images shortly. Domain - 3D 16 Deg. rearward facing ramp with a total domain length of 2.5 m. Assigned inlet Velocity U_0 = 4. m/s and Reynolds Number of 81 000. The outlet pressure is 0 (ambient) and the top wall is modelled as a zero-shear wall. Both sides are set to symmetry. The aim is to induce some flow separation and hence downstream Wall-normal lines have been created at 50 mm, 100 mm and 200 mm. I would like to plot Vel_U at the 3 locations on a single chart. The Y-axis needs to be the Y-coordinate (range 0-233mm) however, I am trying to present the X-axis with the 3 velocity profiles at the 3 locations respectively. I understand that the units might be very confusing for this however, I think it has been done in literature with TecPlot. Please comment on whether this is possible using ANSYS CFD Post and I will really appreciate the help. |
|
October 26, 2012, 07:29 |
|
#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,864
Rep Power: 144 |
This is easy in CFD-Post. Define your points for the lines to be perpendicular to the walls and tiy can extract the velocity along the lines. I think that is what you are looking for.
|
|
October 26, 2012, 22:57 |
|
#3 |
Senior Member
Ovi
Join Date: Oct 2012
Location: Sydney, Australia
Posts: 166
Rep Power: 14 |
Thanks for the reply Ghorrocks however, I don't think it is quite that simple. I have already drawn normal lines lying on the central, longitudinal plane of the ramp and the velocity profiles are easy to extract and export as CSV files.
I am trying to overlay these velocity profiles at the respective locations downstream such that the development of the flow is clearly and easily visualised. I have attached and image of the ramp geometry with the flow in (-x) direction [Capture.png]. The Profiles have been extracted and attached as an image [Capture2.png]. Is there a good way to create this through the user-interface or do we have to create some new expressions and variables? I have thought about making some expressions like x+u_{x} or something similar however, that is non-sense and the units would obviously be incorrect. Thanks and appreciate the time. |
|
October 27, 2012, 08:28 |
|
#4 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,864
Rep Power: 144 |
In that case I do not understand what you are trying to do. Can you post an image of where you want to place the velocity profiles and what you want to do with it? Also I do not know what you mean by x+u_{x} - what is the purpose of this?
|
|
October 28, 2012, 02:46 |
|
#5 |
Senior Member
Ovi
Join Date: Oct 2012
Location: Sydney, Australia
Posts: 166
Rep Power: 14 |
I have found an example of flow through a planar asymmetric diffuser.
The attached image was taken from a study conducted by Reid A. Berdanier of Purdue University. (April, 2011) The idea is to present the data for velocity profiles at the different downstream locations along the diffuser. Please advise further if you think this is possible within ANSYS CFD-Post. Regards, Ovi |
|
October 28, 2012, 06:57 |
|
#6 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,864
Rep Power: 144 |
I understand now.
I would be looking at tecplot or similar for doing something like this. This plot would be tricky in CFD-Post, but you could probably do something similar. |
|
October 28, 2012, 20:04 |
|
#7 |
Senior Member
Ovi
Join Date: Oct 2012
Location: Sydney, Australia
Posts: 166
Rep Power: 14 |
Yeah I think the result I posted previously was processed using TecPlot. I currently do not have access to this software.
Can someone please provide some alternative post-processing applications which can produce similar output? I would prefer an open-source or free application that accepts CFX or Fluent Data. Thanks for any comments and suggestions. |
|
September 18, 2016, 04:24 |
3-D axial velocity profiles in ANSYS CFD post
|
#8 |
New Member
ehsan
Join Date: Oct 2014
Posts: 1
Rep Power: 0 |
Greetings Dear Friends
I want 3-D axial velocity profiles from ANSYS CFD Post down. So I can not compare my results with the photo attached. Is there such a possibility in ANSYS CFD Post? |
|
September 18, 2016, 08:39 |
|
#9 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,864
Rep Power: 144 |
Try a user surface with an offset from an existing surface. Start with the cross section plane and offset by the velocity.
|
|
Tags |
cfd - post, cfx, post-processing, tecplot, velocity graph |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Question about post processing | qtian | OpenFOAM Post-Processing | 0 | July 24, 2007 13:44 |
fluent for post processing | James | FLUENT | 0 | April 21, 2006 05:43 |
Recommend software for simple post processing | zonexo | Main CFD Forum | 5 | March 4, 2006 04:20 |
Post Processing in FEM | Abhijit Tilak | Main CFD Forum | 0 | April 26, 2004 12:59 |
looking for a post processing s/w | han | Main CFD Forum | 0 | May 9, 2001 23:44 |