Particle And Powder Characteristics PDF
Document Details
Uploaded by Deleted User
Tags
Summary
This document provides a notation and definitions related to particle size distribution and characterization. It covers concepts like the Sauter mean diameter, coordination numbers, and permeability. The document appears to be part of a larger work on powder dynamics and engineering.
Full Transcript
2 Particle and Powder Characteristics NOTATION d Short axis of ellipsoid (m) dp Particle diameter (m) dpA Sauter me an diameter (m) D Diameter of container (m) fn{d p ) Frequency distribution of particles (m ~ 1) g(d p ) Particle size distribution function on...
2 Particle and Powder Characteristics NOTATION d Short axis of ellipsoid (m) dp Particle diameter (m) dpA Sauter me an diameter (m) D Diameter of container (m) fn{d p ) Frequency distribution of particles (m ~ 1) g(d p ) Particle size distribution function on weight basis (kg m ~ 1) g'(d p ) Normalized weight distribution function (-) k Coordination number (-) K Permeability (m 2 ) I Long axis of ellipsoid (m) N Total number of particles in assembly (-) Sp Specific surface area of particle (m ~ 1) W Total weight of assembly (kg) r Radial coordinate (-) v Local fluid velocity (m s ~ 1) V Average fluid velocity (m s ~ 1) b Volume fr action of large spheres (-) 19 20 THE DYNAMICS OF FINE POWDERS e External porosity of powder packing (-) ei Internal porosity of particles (-) Pe Fluid density (kg m - 3) Pp Particle density (kg m - 3) Ps Skeletal density (kg m - 3) (Jw Standard deviation (m)
