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Atomization and Sprays

Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

Institutional price:	$787.00
Issues per year:	8

Best Paper Award Selection - Editorial Board Site

1991, Volume1

112 pages

Issue price - $75.00

OPERATION, CALIBRATION, AND ACCURACY OF THE FORWARD SCATTERING SPECTROMETER PROBE IN AN ICING ENVIRONMENT

Edward A. Hovenac
Sverdrup Technology, Inc., NASA Lewis Research Center MS 77-1, Cleveland, Ohio 44135

ABSTRACT

The forward scattering spectrometer probe (FSSP) is a particle sizing instrument that may be used to measure droplet diameters in icing clouds. Operation of the FSSP in an icing environment is discussed. Also, measurement of certain optical parameters is recommended to improve the confidence in the data obtained with the FSSP. Methods for making these measurements are given in detail.
Calibration of the FSSP is described using three methods: glass beads, a droplet generator, and a rotating pinhole device. Both the theoretical and practical advantages and disadvantages of each method are explored.
Accuracy of the FSSP is estimated by testing individual instrument components, using computer simulations, and by comparing with other droplet sizing instruments. The magnitude of sizing errors in the FSSP is found to be the result of many factors, including number density, velocity, size-velocity correlation, and calibration errors.