Multiple Scattering Effects in Dense Spray Sizing by Laser Diffraction

Abstract

The purpose of the reported work is to present practical schemes to correct the effect of multiple scattering in a dense drop field on the measured distribution parameters by laser light scattering-based spray sizing techniques. An experimental study, involving multimodal distributions and drop fields which can not be adequately described by single-mode two-parameter distributions, is described. Data from the experimental program were employed to develop empirical expressions to correct the measured spray parameters at high obscuration levels. Accuracies of the proposed expressions are acceptable for engineering applications and comparable to the accuracies involved in conversion of light scattering data to drop size information.