Visibility of large spheres observed with a laser velocimeter: a simple model
Abstract
A model is developed to express the signal visibility for large refracting or reflecting spheres observed with a fringe-type laser velocimeter. The model yields a closed form solution for the visibility when scattering is observed off axis in the near forward, 90 deg, or near backward direction. Results show that particle size range can be adjusted by aperture adjustments at the scattered light receiver. Comparison of model predictions with recently published numerical computations shows good agreement.
- Publication:
-
Applied Optics
- Pub Date:
- November 1980
- DOI:
- 10.1364/AO.19.003660
- Bibcode:
- 1980ApOpt..19.3660F
- Keywords:
-
- Laser Doppler Velocimeters;
- Particle Size Distribution;
- Two Phase Flow;
- Visibility;
- Backscattering;
- Diffraction Patterns;
- Light Scattering;
- Refractivity;
- Spheres;
- Instrumentation and Photography;
- VELOCIMETRY: LASER DOPPLER;
- SCATTERING