Accession Number : ADA181576

Title :   Vaporization, Ignition, and Combustion of Two Parallel Fuel Droplet Streams.

Descriptive Note : Rept. for Oct 85-Oct 86,

Corporate Author : CALIFORNIA UNIV IRVINE DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Rangel,R H ; Sirignano,W A

PDF Url : ADA181576

Report Date : Mar 1987

Pagination or Media Count : 42

Abstract : An analysis of the combined mechanisms of heat transfer, vaporization, ignition, and combustion of two parallel fuel droplet streams injected in a hot, oxidizing gas flow is presented. The analysis gives a qualitative understanding of the various complex phenomena involved in the vaporization and ignition of one stream of droplets followed by the propagation of the flame to a second stream and the establishment of diffusion flames surrounding each droplet stream. The two-dimensional physical model consists of a constant-property oxidizing gas flowing with a uniform velocity between two insulated planes. The temperature of the gas at the inlet of the channel is specified. The fuel droplet streams are represented as two parallel droplet sheets injected at prescribed locations within the gas flow. Liquid temperature, droplet radius, as well as droplet sheet density and velocity are specified at the inlet. Keywords: Spray combustion, Ignition of sprays, Flame propagation in sprays.

Descriptors :   *COMBUSTION, *IGNITION, *FLAMES, VAPORIZATION, DROPS, RADIUS(MEASURE), FUELS, STREAMS, HEAT TRANSFER, POSITION(LOCATION), DIFFUSION, DENSITY, SHEETS, GAS FLOW, HIGH TEMPERATURE, OXIDATION, LIQUIDS, TEMPERATURE, PROPAGATION, MODELS, PHYSICAL PROPERTIES, TWO DIMENSIONAL, PARALLEL ORIENTATION, SHEETS, VELOCITY

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE