Simultaneous multipoint measurements of density gradients and temperature in a flame

Technical Report · Fri Sep 01 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/5523612· OSTI ID:5523612

Long, M. B.

A summary is given of research directed toward the study of turbulent reacting and nonreacting flows by nonintrusive in situ optical techniques. During the funding period, new diagnostic techniques were developed for the instantaneous mapping of species concentration and temperature in turbulent flames in two and three dimensions. A number of different light scattering mechanisms were utilized including Rayleigh scattering, spontaneous Raman scattering, and fluorescence. Simultaneous measurements of multiple scalars were demonstrated and a method for determining all three components of the scalar gradient was developed. Using advances in high-speed imaging systems, two-dimensional measurements of gas-phase flows were performed at rates high enough to follow their temporal evolution. The data provided by these techniques will be useful for understanding the interaction of turbulence and chemistry in turbulent flames. 18 refs.

• Research Organization: Yale Univ., New Haven, CT (USA). Dept. of Mechanical Engineering
• Sponsoring Organization: DOE/ER
• DOE Contract Number: FG02-85ER13427
• OSTI ID: 5523612
• Report Number(s): DOE/ER/13427-2; ON: DE90001719
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
640410 -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHEMISTRY
DENSITY
DEPOSITION
DIAGNOSTIC TECHNIQUES
DOCUMENT TYPES
FLAME SPRAYING
FLUID FLOW
IMAGES
PHYSICAL PROPERTIES
PROGRESS REPORT
SPRAY COATING
SURFACE COATING
TEMPERATURE GRADIENTS
TURBULENT FLOW