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by davetaflin
Tue Dec 01, 2015 8:02 am
Forum: TecIO Library
Topic: Write failure during repack on file
Replies: 2
Views: 3226

Re: Write failure during repack on file

Hi, Tecio stores most of the data fed to it in a temporary file, then appends the contents of that temporary file to the .plt file when tecend is called. This error message is reported if one of two circumstances occurs: (1) Unable to read the temporary file, or (2) unable to write to the .plt file....
by davetaflin
Tue Feb 22, 2011 8:18 am
Forum: Analyzer
Topic: Why is vorticity ALWAYS ZERO on surfaces in Tecplot
Replies: 5
Views: 5691

Re: Why is vorticity ALWAYS ZERO on surfaces in Tecplot

You can interpolate vorticity from the volume zones to the surface zones using Tecplot's Data/Interpolate... options. If the nodes of your surface zones are coincident with nodes in your volume zones, linear interpolation should be fine (and quick). Otherwise, you may want to consider Kriging, a muc...
by davetaflin
Tue Apr 27, 2010 3:19 pm
Forum: Analyzer
Topic: Circulation around vortex core
Replies: 12
Views: 11194

Re: Circulation around vortex core

Defining a closed path in three dimensions can be a challenge. If you have ordered data, you may be able to define an index range that encloses the desired location. The macro Jim mentioned gives you (with some editing) another option for creating a circular I-ordered zone in 3D. Once you have creat...
by davetaflin
Tue Feb 16, 2010 6:00 pm
Forum: Tecplot 360 and Focus
Topic: Particle Path Calculation Method
Replies: 1
Views: 1186

Re: Particle Path Calculation Method

Chris, The spatial interpolation method is piecewise-linear by default. Cells are, in effect, divided by adding nodes at their center and face centers, until all cell pieces are tetrahedral. The extra nodes are calculated by arithmetically averaging the variable values at all nodes (for the cell-cen...
by davetaflin
Mon Jan 25, 2010 11:36 am
Forum: Analyzer
Topic: Circulation around vortex core
Replies: 12
Views: 11194

Re: Circulation around vortex core

Hello, Ridhwan, If you can define a closed path in your data over which to integrate, you can calculate circulation using the Analyze/Perform Integration menu option. In the Integrate dialog, for Type of Integration, select Vector Dotted with Unit Tangential, and select your velocity components for ...
by davetaflin
Fri Oct 16, 2009 8:12 am
Forum: TecIO Library
Topic: p3d2tec on Suse with PGI Fortran 90
Replies: 6
Views: 4292

Re: p3d2tec on Suse with PGI Fortran 90

Andy, I think the key bit of information here is the presence in your object code of mixed-case symbols such as TecEnd110. PGI Fortran by default translates all symbols to lower-case, and appends an underscore. If it were doing that with your code, this symbol would have been tecend110_, and your li...
by davetaflin
Fri Oct 02, 2009 8:00 am
Forum: Tecplot Macro Language
Topic: Spatial Gradient Calculation
Replies: 1
Views: 2222

Re: Spatial Gradient Calculation

Hi, If your data is structured, then Tecplot uses curvilinear coordinate transformations to calculate the gradients, which would give somewhat different results from yours. If your data is unstructured, then Tecplot calculates it very much the same as you describe here, a technique called "Movi...
by davetaflin
Wed Sep 02, 2009 12:00 pm
Forum: Loading Data
Topic: Problem importing Fluent Data
Replies: 4
Views: 2904

Re: Problem importing Fluent Data

John,

Is it a test case supplied with FLUENT, or something you could send to us?

Dave
by davetaflin
Thu Nov 20, 2008 1:19 pm
Forum: Add-on Developer's Kit (ADK)
Topic: Using ArgLists in Fortran
Replies: 4
Views: 3526

Re: Using ArgLists in Fortran

The length of the routine name is the problem here. Some Fortran compilers truncate symbols to 31 characters, which is what our Fortran-C interface assumes. Apparently, your compiler supports longer symbols. You should be able to work around this by calling the function as: tecutildatavaluegetwritab...

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