Using a 3-dimensional 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 two-dimensional algorithm that minimizes these errors is presented and is analytically validated using simple potential flows. The algorithm is extended to three-dimensional 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 three-dimensional 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