How to calculate the circulation around a vortex core.

Problem: I extracted a vortex core using the Tecplot CFD Analyzer, and now I want to calculate the circulation around the core. How can I do this? Solution: If you can define a closed path in your data over which to integrate, you can calculate circulation using the Integrate dialog. Open the dialog by choosing “Perform Integration” from the Analyze menu. In the Integrate dialog that appears, for Type of […]

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Kriging algorithm

Problem: How does Tecplot calculate Kriging interpolation? Solution: Kriging and the Semivariogram. A semivariogram is a function that determines the relationship between distance and the variance of the data. Tecplot models the semivariogram with a spherical model using the range and zero value specified in the Kriging dialog as well as the variance of the variable(s) selected to krig.  Here are the details: For each variable selected Tecplot calculates the variance […]

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Display problems on Ubuntu Linux platforms

Problem: I just installed a Tecplot product on my Ubuntu platform and I’m having display problems. How do I fix the problem? Solution: Try adding the -mesa flag to the command you are using to start your Tecplot product. If this doesn’t resolve the display issue you are experiencing it is possible that the Compiz Fusion visual effects (in Ubuntu platforms 7.10 or newer) are causing the problem. To disable […]

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Import image tips

Problem: I want my image to be a background for my plot.  I want the image to fill the frame.  How can I match the dimensions of my image to my plot? Solution: Load your data then go to Insert/Image and insert the image. To tell Tecplot to draw the image behind the data double click on the image and set the Draw Order to Before Data. To make the […]

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AVI animations on Linux or Macintosh platforms

Problem: I have difficulty playing AVI animations created in my Tecplot product when I try to play them on my Macintosh or Linux platform. When I try to play them on my Linux platform the AVI files work with Xanim but Xanim itself does not work very well anymore. On a Macintosh platform, I use Quicktime but the AVI files that the Tecplot product creates do not open in Quicktime. […]

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Tecplot 10 is slower than Tecplot 9

Note: This software version is no longer supported. Download the latest release or get a free trial. Problem: For zooming or translating my contour plot, Tecplot 10 is much slower than Tecplot 9. Solution: The difference between Tecplot 10 and Tecplot 9 is that different contour levels are set. Notice what levels Tecplot 10 sets set the same levels in Tecplot 9 and see if that makes Tecplot 9 performance slower. If […]

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Cannot launch the license server

Problem: I installed the Reprise License Manager (RLM) and placed my license key file (tecplotlm.lic) in the RLM installation folder but the license manager did not run. How do I get it to run? Solution: Edit the tecplotlm.lic file in your license manager installation folder so that the ISV line of the file says this: ISV teclmd teclmd teclmd.opt 27101 instead of this: ISV teclmd 27101 Then you should be […]

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Animating points

Problem: I have some files with some scatter points animated to move in constant velocity. However, the movie shows relative motion of the scatter points making the animation appear jerky. Solution: The reason the scatter points look like they are moving relative to one another has to do with the way they are drawn on the screen. Any object drawn to the screen will be rounded off to the nearest […]

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Using old text formatting

Problem: Is there any way to use old text formatting with Tecplot 10? Many of my layouts contain text with the special symbols (~ ` _ and so forth). Solution: You can add a command to the tecplot.cfg file to see the text formatted with Tecplot 9 style: $!Compatibility AllowOldTextFormatting = yes This option will let the user use both formatting types at once. It will show both lines of […]

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