INSITU OPTICAL-PARTICLE SIZING TECHNIQUE

This paper discusses the application of an in situ optical counter to the measurement of liquid fuel droplets and solid coal particles under combustion conditions. Mie theory computations are used to determine an optimal near-forward light-scattering geometry for sizing both spherical transparent particles and irregularly shaped light-absorbing particles in the 5-80 mu m range. Results are presented for a burning methanol spary and for reacting coal particles.