The motion of aerosol particles in a computed turbulent flow model  To determine the accuracy of a L.D.V. system
Abstract
The BassettBoussinesqOseen (BBO) equation for the motion of a single spherical particle in a laminar fluid flow is modified for the case of turbulent flow with the introduction of a term for the effect of the spherical particle in a velocity shear flow. A pseudoturbulent flow model is then constructed in order to provide estimates for the fluid velocity and acceleration terms. The turbulent eddy is represented by groups of randomly positioned moving vortices. The method provides for a continuous pseudoturbulent velocity history in both space and time. Initial computer studies with a twodimensional model with short sample length shows that for flyash (glass) spherical particles of diameter equal to or less than ten microns in air, the particle effectively follows the turbulent fluid motion.
 Publication:

Laser Anemometry
 Pub Date:
 1976
 Bibcode:
 1976laan.symp..277B
 Keywords:

 Aerosols;
 Atmospheric Models;
 Instrument Errors;
 Laser Doppler Velocimeters;
 Particle Motion;
 Turbulence Models;
 Turbulent Flow;
 Computerized Simulation;
 Flow Measurement;
 Laminar Flow;
 Shear Flow;
 Two Dimensional Flow;
 Two Dimensional Models;
 Velocity Measurement;
 Vortices;
 Fluid Mechanics and Heat Transfer