Boundary conditions - Local cylindrical coordinate system

FluentStarter · January 31, 2017, 09:28

Hello guys,

Did anybody of you already use local cylindrical coordinate systems to get profiles on specified boundaries as shown in the picture?

I generated the prof.-file(checked it in Tecplot before) , determined my axis origin and direction(coordinates out of CAD and checked them with the line tool in fluent), initialized the solution and wanted to check the boundaries with a contour plot.
For the velocities everything works fine, but the profile for the mixture fraction is not mapped on the boundary.

Do you maybe have some ideas to troubleshoot?

Thanks in advance

Kushal Puri · February 1, 2017, 07:33

Quote:

Originally Posted by FluentStarter

Hello guys,

Did anybody of you already use local cylindrical coordinate systems to get profiles on specified boundaries as shown in the picture?

I generated the prof.-file(checked it in Tecplot before) , determined my axis origin and direction(coordinates out of CAD and checked them with the line tool in fluent), initialized the solution and wanted to check the boundaries with a contour plot.
For the velocities everything works fine, but the profile for the mixture fraction is not mapped on the boundary.

Do you maybe have some ideas to troubleshoot?

Thanks in advance

You need to define axis origin and axis direction

FluentStarter · February 1, 2017, 08:39

Quote:

Quote:
Originally Posted by FluentStarter

Hello guys,

Did anybody of you already use local cylindrical coordinate systems to get profiles on specified boundaries as shown in the picture?

I generated the prof.-file(checked it in Tecplot before) , determined my axis origin and direction(coordinates out of CAD and checked them with the line tool in fluent), initialized the solution and wanted to check the boundaries with a contour plot.
For the velocities everything works fine, but the profile for the mixture fraction is not mapped on the boundary.

Do you maybe have some ideas to troubleshoot?

Thanks in advance

Quote:

You need to define axis origin and axis direction

Determined+Defined it already .....

FluentStarter · February 7, 2017, 05:41

I made a workaround for my problem.
The thing with the local cylindrical coordinates worked for the velocity components but not for the mixture fraction.
Because of this I transformed the radial data with tecplot to x-y-data with the origin [0,0,0]. Then i calculated the rotation matrix with Matlab, determined the Direction Vector and used the orientate-profile-function in fluent.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Centrifugal fan	j0hnny	CFX	13	October 1, 2019 13:55
Difficulty In Setting Boundary Conditions	Moinul Haque	CFX	4	November 25, 2014 17:30
Error finding variable "THERMX"	sunilpatil	CFX	8	April 26, 2013 07:00
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3	bookie56	OpenFOAM Installation	8	August 13, 2011 04:03
[Q] Boundary conditions in Turbomachinery	ghlee	Main CFD Forum	3	July 23, 1999 17:05

February 7, 2017, 05:41		#4
FluentStarter Member Join Date: Apr 2014 Location: N/A Posts: 50 Rep Power: 13	I made a workaround for my problem. The thing with the local cylindrical coordinates worked for the velocity components but not for the mixture fraction. Because of this I transformed the radial data with tecplot to x-y-data with the origin [0,0,0]. Then i calculated the rotation matrix with Matlab, determined the Direction Vector and used the orientate-profile-function in fluent.