He. Albrecht et al., THE CROSS-SECTIONAL AREA DIFFERENCE METHOD - A NEW TECHNIQUE FOR DETERMINATION OF PARTICLE CONCENTRATION BY LASER-DOPPLER ANEMOMETRY, Experiments in fluids, 16(1), 1993, pp. 61-69
A new technique for the determination of particle concentration from t
he signals of a laser Doppler anemometer (LDA) is described. It is bas
ed on a statistical relation between the number of Doppler periods, or
the amplitude of the Doppler signals, and the particle concentration.
The technique allows the mass flux of the dispersed phase of a two-ph
ase flow to be obtained from the data set of a conventional one-dimens
ional (1D) LDA. The technique has been called the ''cross sectional ar
ea difference method''. Simulations and first experimental results are
presented and discussed.