Clear Filters
Clear Filters

Integration algorithm used in the function stream3?

3 views (last 30 days)
What is the integration algorithm used in the function stream3 to calculate the streamline coordinates (Euler ?, Runge-Kutta?, what order?). I need to report this in a paper for a description on how the results have been obtained.
  3 Comments
Ana Cadavid
Ana Cadavid on 14 Aug 2017
Thank you for your reply. Are you sure? The input is a 3d vector space which gives the direction in which the streamline will go. This implies some type of integration. Thanks again
Walter Roberson
Walter Roberson on 14 Aug 2017
"Streamlines are a family of curves that are instantaneously tangent to the velocity vector of the flow. These show the direction in which a massless fluid element will travel at any point in time"
then given non-uniformly sampled 3D data and a sampling point, the processing could be to use interpolation on each of the U, V, W components, and calculate the surface normals. The interpolation from scattered coordinates could require Convex Hull or Delaunay Triangulation methods to figure out which are the influencing points for any one location to be interpolated at, but once those are known, probably a method such as bilinear interpolation would be used. I do not see any role for integration in this, unless you want to phrase linear interpolation in terms of integration.

Sign in to comment.

Answers (0)

Categories

Find more on Interpolation in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!