Accession Number : AD0727827

Title :   Particle Nonequilibrium Effects in Mixing and Combustion of Ducted, Particle-Laden Flows.

Descriptive Note : Technical rept.,

Corporate Author : BRIGHAM YOUNG UNIV PROVO UTAH DEPT OF CHEMICAL ENGINEERING

Personal Author(s) : Smoot,L. Douglas ; Anderson,Gregory S.

Report Date : 01 JUL 1971

Pagination or Media Count : 33

Abstract : Development of a model has been previously reported for describing combustion of a particle-laden stream which is mixing with a subsonic secondary stream in a duct. This paper presents an extension of this model to include particle non-equilibrium effects. Particle drag, thermal lag, and particle ignition and combustion effects are considered. A series of parametric calcuations for typical metal-loaded, air-augmented systems, showing effects of particle size, secondary air conditions, and secondary duct pressure on metal combustion efficiency are reported. Influences of low secondary duct pressure are examined. A new turbulent mixing coefficient is used for the computations. (Author)

Descriptors :   (*NOZZLE GAS FLOW, *COMBUSTION), (*PARTICLES, NOZZLE GAS FLOW), JET MIXING FLOW, BORON, PARTICLE SIZE, IGNITION, PRESSURE, TURBULENCE, MATHEMATICAL ANALYSIS, SECONDARY FLOW, BURNING RATE

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE