Using a 3dimensional laser anemometer to determine mean streamline patterns in a turbulent flow
Abstract
The determination of mean streamline patterns by moving the test point in the direction of the measured velocity is shown to produce cumulative errors that are unacceptable. A twodimensional algorithm that minimizes these errors is presented and is analytically validated using simple potential flows. The algorithm is extended to threedimensional flows and is again validated analytically. Finally, as an example of a typical application of the algorithm, mean streamlines are measured in a complex, turbulent flow with a threedimensional laser anemometer.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 July 1984
 Bibcode:
 1984STIN...8711143O
 Keywords:

 Algorithms;
 Flow Distribution;
 Laser Anemometers;
 Three Dimensional Flow;
 Turbulent Flow;
 Flow Measurement;
 Laminar Flow;
 Laser Doppler Velocimeters;
 Two Dimensional Flow;
 Velocity;
 Instrumentation and Photography