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The Effect of Laser Beam Misalignment on the Probe Volume Dimensions in Duel-Beam Interferometry Measurements

Published

Author(s)

J F. Widmann, Cary Presser

Abstract

A two-dimensional model was developed to evaluate the effect of laser beam alignment errors on the dimensions of the probe volume in duel-beam interferometry measurements. Simulations of droplets passing randomly through the probe volume of a two-component system were conducted for various levels of beam misalignment. Of particular interest is the probe area for different droplet trajectories, path length distributions through the probe volume, and the correlation between the gate time on the two channels. It is shown that misalignment of the laser beams results in a probe area that depends upon the droplet trajectory. The analysis is applicable to both laser Doppler velocimetry (LDV) and phase Doppler interferometry (PDI).
Citation
Atomization and Sprays

Keywords

droplets, laser Doppler velocimetry, LDV, PDI, PDPA, phase Doppler interferometry, sprays

Citation

Widmann, J. and Presser, C. (2017), The Effect of Laser Beam Misalignment on the Probe Volume Dimensions in Duel-Beam Interferometry Measurements, Atomization and Sprays (Accessed April 21, 2024)
Created February 19, 2017