tecplot 360 particle tracking
Hey Guys,
Does any one know the way tecplot calculates the streamlines? I can't figure out how it selects the velocity vectors, or once it selects a vector how it moves to the next vector. Thanks 
Tecplot's calculation of streamtraces
Tecplot has some notes on its website that may help in this area.
From Tecplot's Knowledge Base http://kb.tecplottalk.com/products/t...ecalculation/ (which has been recently improved) is this note: Problem: How does Tecplot calculate streamtraces? Solution: Calculation of streamtraces in Tecplot uses a twostep secondorder RungeKutta method which may be summarized as follows: 1. The velocity vector direction is calculated at the current particle position. 2. A small step is made (configurable by the user) and the velocity vector direction is calculated at the new location. If necessary the step size is reduced so that no more than one cell is skipped over by the step. The step size is also reduced if a zone boundary is encountered. 3. The vectors obtained in 1 & 2 are averaged and the resulting vector is reapplied at the initial position. The weights of this averaging enforce formal secondorder accuracy. To calculate velocities at each point bi or trilinear interpolation is used. Refer to the Knowledge Base item on Probing for more details on this interpolation. A demonstration of calculating streaklines and particles is detailed in this blog entry: http://www.tecplot.com/Community/Blo...reaklines.aspx Does this answer your question? Regards, Scott 
i had the high concept down, but thank you for the detailed explanation!

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