Splicing Together Size Distributions to Increase the Size Range of a Phase Doppler Interferometer

Published

July 1, 2000

Author(s)

J F. Widmann, S R. Charagundla, Cary Presser, Stefan D. Leigh

Abstract

A phase Doppler interferometer (PDI) was used to measure the intensity (i.e., the expected number of droplets measured per unit time) of a swirling methanol spray flame. Gaps observed in the data, which have been previously reported (McDonell and Samuelsen, 1955), correspond to periods where the PDI was inactive. The intensity of the spray as a function of position within the flame was determined from the distribution of interarrival times (time between subsequent droplets entering the probe volume of the PDI), and a statistical simulation was developed to correct for the regularly occurring intervals in which the PDI does not accept data. The duration of this dead time was determined to be 5.2 ms for all points in the flame for which data were collected. The intensity of the spray varied by over two orders of magnitude throughout the flame. A statistical model is presented to correct for the observed behavior of the PDI, and the good agreement between the simulations and the experimental data indicate that the spray can be adequately modeled by Poisson statistics.

Proceedings Title

Proceedings of the 8th International Conference on Liquid Atomization and Spray Systems (ICLASS-2000)

Conference Dates

July 16-20, 2000

Conference Location

Undefined

Conference Title

International Conference on Liquid Atomization and Spray Systems

Pub Type

Conferences

Keywords

phase Doppler interferometry, Poisson statistics, spray combustion, sprays

Citation

Widmann, J. , Charagundla, S. , Presser, C. and Leigh, S. (2000), Splicing Together Size Distributions to Increase the Size Range of a Phase Doppler Interferometer, Proceedings of the 8th International Conference on Liquid Atomization and Spray Systems (ICLASS-2000), Undefined (Accessed January 18, 2025)