L.D.A. techniques in sprays characterization
Abstract
The development of a particle sizing technique for fuel sprays in combustion is outlined. The technique utilizes a dual-beam laser Doppler velocimeter and allows the in situ measurement of the size and velocity of individual particles. Droplet size measurements in the 10 to 100 micron range can be obtained with spatial resolution less than 1 cu mm. The method does not require calibration and the visibility parameter is not dependent on particle trajectory. The technique is limited by the complexity of the Mie scattering calculations and the ambiguity in the relation visibility vs diameter which proceeds from the nonmonotonic behavior of the visibility curve.
- Publication:
-
5th International Symposium on Air Breathing Engines
- Pub Date:
- 1981
- Bibcode:
- 1981abe..symp...52G
- Keywords:
-
- Drop Size;
- Flow Velocity;
- Fuel Sprays;
- Laser Doppler Velocimeters;
- Laser Interferometry;
- Particle Size Distribution;
- Argon Lasers;
- Background Noise;
- Laser Outputs;
- Numerical Analysis;
- Visibility;
- Fluid Mechanics and Heat Transfer