H. Dahl, T. Wriedt:
The Simulation of Phase-Doppler Anemometry by the
Multiple Multipole Method.
Submitted to Part. Part. Syst. Charact. in July 1996.
Abstract
A huge field of application for phase Doppler anemometry (PDA) could be found
in process control using measurements of mass flux, if the precision of
size determination by PDA can be guaranteed.
In order to concern with error minimization we have to state that only
theoretical reasearch allows to concentrate on one error separately.
To simulate PDA errors we have
extended a method for light scattering calculations to Gaussian beams:
the multiple multipole method (MMP). At this time our programme
is able to simulate PDA with any setup consisting of Gaussian beams, using
one or more homogeneous particles with arbitrary shape and movement and two
detectors at any position and with an arbitrarily shaped aperture.
We give results of a theoretical investigation on multiple scattering effects
caused by two spheres.
