Determination of local radiative properties in coal-fired flames: Technical progress report, September 15, 1987--March 15, 1988

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6791122

Menguc, M P; Altenkirch, R A; Agarwal, B; Bush, M; Subramaniam, S

In order to study the interaction of radiation with combustion or turbulence in combustion systems, we have to know the medium radiative properties as accurately as possible. One of the main goals is to develop an analytical procedure to determine the ''effective radiative properties'' of cylindrical axisymmetric, inhomogeneous, absorbing, and anisotropically scattering clouds using the data from line-of-sight measurements. These ''projection data'' will be reduced to determine the local, effective scattering and extinction cross sections, and the scattering phase function of particles. The data reduction scheme is based on the solution of the inverse radiation problem. The inverse radiation problem is to be formulated and solved by considering the physical system. For an absorbing, emitting, and anisotropically scattering pulverized-coal flame, the system to be considered is cylindrical and axisymmetric, but nonhomogeneous. If the medium is not scattering, the solution of the inverse problem is obtained from the Abel integral equation. For a scattering medium, however, there is no inverse solution technique available in the literature. A new technique, angular tomography, can be used for such a system provided that the medium is not a multiple scattering one. The formulations of the inverse solution techniques will be discussed. 60 refs., 8 figs.

• Research Organization: Kentucky Univ., Lexington (USA). Dept. of Mechanical Engineering
• DOE Contract Number: FG22-87PC79916
• OSTI ID: 6791122
• Report Number(s): DOE/PC/79916-1; ON: DE88011160
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
014000* -- Coal
Lignite
& Peat-- Combustion
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
DIAGNOSTIC TECHNIQUES
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
ENERGY SOURCES
ENERGY TRANSFER
EQUATIONS
FOSSIL FUELS
FUELS
HEAT TRANSFER
LASER RADIATION
MATERIALS
MATHEMATICAL MODELS
OPTICAL PROPERTIES
OXIDATION
PARTICLES
PHYSICAL PROPERTIES
PROGRESS REPORT
RADIANT HEAT TRANSFER
RADIATIONS
THERMOCHEMICAL PROCESSES
TOMOGRAPHY