Measurements of spatial velocity correlation for turbulent flow in a pipe
Abstract
The spatial correlation of radial components of velocity at two points in turbulent flow in a pipe has been determined using the intensity fluctuation spectrum and a direct Laser Doppler Technique. Comparison of the results with the time autocorrelation at one of the points showed Taylor's hypothesis to be a good approximation but deviations were found.
- Publication:
-
The Accuracy of Flow Measurements by Laser Doppler Methods
- Pub Date:
- 1976
- Bibcode:
- 1976afml.proc..719D
- Keywords:
-
- Flow Measurement;
- Laser Doppler Velocimeters;
- Pipe Flow;
- Turbulent Flow;
- Velocity Measurement;
- Correlation Coefficients;
- Light Scattering;
- Luminous Intensity;
- Optical Equipment;
- Photomultiplier Tubes;
- Radial Velocity;
- Signal Mixing;
- Spatial Distribution;
- Instrumentation and Photography