Accession Number : ADP008981

Title :   Effect of Particle Statistics on Measurements of Transient Sprays by Single-Particle Counters,

Corporate Author : SANDIA NATIONAL LABS LIVERMORE CA COMBUSTION RESEARCH FACILITY

Personal Author(s) : Chin, W. K. ; Marx, K. D. ; Edwards, C. F.

Report Date : 23 JUL 1992

Pagination or Media Count : 7

Abstract : The effect of the single-particle limitation on the response of phase-Doppler instruments is determined for particle distributions which are spatially nonuniform and time-dependent. Poisson statistics are applied to particle positions and arrival times within the phase-Doppler probe volume to determine the probability that a particle is accepted. The results are then applied to a numerical simulation of a diesel spray. The calculated hypothetical response of the instrument provides a quantitative demonstration of the regimes within which measurements can accurately be made in such sprays. (Author)

Descriptors :   *FUEL SPRAYS, *FLOW VISUALIZATION, PARTICLES, DIESEL ENGINES, PHASE MODULATION, DOPPLER SYSTEMS, HONG KONG.

Subject Categories : Fuels
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE