Accession Number : AD0778287

Title :   Air Velocity, Temperature, and Radiant-Heat Measurements within and around a Large Free-Burning Fire,

Corporate Author : DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s) : Adams,J. S. ; Williams,D. W. ; Tregellas-Williams,J.

Report Date : 1973

Pagination or Media Count : 9

Abstract : Very large intense stationary fires can induce inflow winds of hurricane force near the fire perimeter, and inside the fire area. These winds can enhance the fire intensity, in comparison with a smaller fire burning under the same conditions. A major question is whether the inflow wind velocity is porportional to the cube root of the fire convective energy-release rate, as is the case for the convection plume well above the fire, or whether other parameters, such as the fire intensity and the temperature-lapse rate of the atmosphere, must also be included. The paper describes and discusses the airflow, radiant-heat, and air-temperature measurements, with particular attention to the inflow-energy-release rate relationship, made in a larger but low intensity fire.

Descriptors :   *Fires, Air flow, Burning rate, Forest fires, Plumes, Convection(Heat transfer), Wind velocity, Thermal radiation, Temperature, Australia

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE