Apparatus for measuring a droplet size distribution based on the

Details Apparatus for measuring a droplet size distribution based on the Apparatus for measuring a droplet size distribution based on the

1987-03-25

1988-10-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356336, G01N 1507, G01N 3149

Patent

active

047790032

ABSTRACT:
A droplet size measuring apparatus of the forward scattering method, wherein particles to be measured in a scattering zone having a predetermined scattering path length are irradiated with parallel laser beams. The irradiated beams are scattered by the particles and the scattering beams are detected by the photodetectors arranged at predetermined scattering angles. The output of the photodetectors are input to an arithmetic operating unit, thus the intensity distribution I(.theta.) of the scattered beams is measured. The droplet size distribution n(D) is calculated from the intensity distribution I(.theta.) using the following equation:

REFERENCES:
patent: 3704951 (1972-12-01), Chupp
patent: 4023909 (1977-05-01), Ross
patent: 4095775 (1978-06-01), Hotham
patent: 4497577 (1985-02-01), Sato et al.
patent: 4595291 (1986-06-01), Tatsuno
AIAA Paper No. 76-69. A Laser Diagnostic Technique For the Measurement of Droplet and Particle Size Distribution, Swithenbank et al. 1976.
The 1st International Conference on Liquid Atomization and Spray Systems (Tokyo, Japan). A Light Scattering Technique for Determining Droplet Size Distributions in Two-Phase Liquid-Dominated Nozzle Jets, Alger et al., 1978.

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