Development of combustion diagnostics and application to turbulent combustion. Interim scientific report 16, February 1978-15 March 1979

Technical Report · Sun Apr 01 04:00:00 EST 1979

OSTI ID:5581116

Hanson, R K; Bowman, C T

Experiments have been conducted in steady, fluctuating and sooting flames produced in flat flame and slot burners operating on premixed fuel and air at atmospheric pressure. Measurements of temperature, CO species concentration and CO spectroscopic parameters have been made using a tunable diode laser absorption technique. The measurements involve rapidly scanning the narrow-linewidth diode laser across individual vibration-rotation lines in the fundamental band of CO at 4.6 microns to record fully-resolved absorption line profiles in times as short as 100 microseconds. A conventional microprobe sampling system to monitor CO and CO/sub 2/ concentrations has been constructed to enable comparisons between laser-based and conventional measurements; thermocouples have been used to allow comparisons with laser-based temperature measurements. Initial results in fuel-rich flames show good agreement. Work is in progress to modify the burner system to allow comparisons over a wider range of stoichiometries.

• Research Organization: Stanford Univ., CA (USA). High Temperature Gasdynamics Lab.
• OSTI ID: 5581116
• Report Number(s): AD-A-068753
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ABSORPTION SPECTRA
BURNERS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ENERGY LEVELS
EXCITED STATES
FLAMES
FLUID FLOW
INFRARED SPECTRA
OXIDES
OXYGEN COMPOUNDS
SAMPLING
SPECTRA
STABILITY
TURBULENT FLOW
VIBRATIONAL STATES