Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Wick-type liquid-metal combustion. Annual report, 15 October 1988-14 October 1989

Technical Report ·
OSTI ID:7196411
; ;
An experimental and theoretical investigation was conducted to study the wick combustion of lithium and sulfur hexafluoride. A single-line laser induced fluorescence thermometry with Li2 as fluorescence species was developed. The calibration experiments yielded promising results; refinements, however, are needed before the technique can be applied to combustion flame measurements. Wick combustion of ethanol and hexane in air as well as Li and SF6 was conducted in a vacuum chamber at atmospheric and sub-atmospheric pressures. The ethanol and hexane wick diffusion flames showed flame oscillations, similar to flame flickers in buoyant jet diffusion flames. The oscillation frequency was estimated in the range 5 to 8 Hz at the pressures examined. The flame stand-off distance was estimated in the range 5 to 8 Hz at the pressures examined. The flame stand-off distance was found to increase when the system pressure was decreased. The wick combustion of Li and SF6 resulted in a bright pinkish flame. The luminous zone appeared quite close to the wick surface at the condition examined. Near the complete consumption of lithium, the wick was burned out due to loss of liquid lithium as a heat sink. On the analysis, a conserved scalar approach was employed to model the wick flame. A single equation was obtain to describe the interface condition of the wick combustion. Numerical solutions were obtained for laminar wick diffusion flames. The prediction yields similarity profiles for both ethanol-air and Li-SF6 wick diffusion flames although non-similar governing equations were retained in the formulation.
Research Organization:
Iowa Univ., Iowa City, IA (USA). Dept. of Mechanical Engineering
OSTI ID:
7196411
Report Number(s):
AD-A-216019/0/XAB
Country of Publication:
United States
Language:
English

Similar Records

Wick-type liquid-metal combustion. Final report, 15 Oct 88-14 Apr 91
Technical Report · Wed May 01 00:00:00 EDT 1991 · OSTI ID:5466350
An experimental investigation of Li and SF{sub 6} wick combustion
Journal Article · Sat Jul 01 00:00:00 EDT 1995 · Combustion and Flame · OSTI ID:89629
Flame structure in a portable oil heater with cylindrical tubes and a wick
Conference · Sat Dec 31 23:00:00 EST 1988 · ASHRAE Transactions (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (USA) · OSTI ID:5997996

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALCOHOLS
ALKALI METALS
ALKANES
CALIBRATION
CHEMICAL REACTIONS
COMBUSTION
DIFFUSION
DISTANCE
DOCUMENT TYPES
ELEMENTS
EQUATIONS
ETHANOL
FLAME PROPAGATION
FLAMES
FLUID FLOW
FLUIDS
FLUORESCENCE
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HEAT SINKS
HEXANE
HYDROCARBONS
HYDROXY COMPOUNDS
INTERFACES
LAMINAR FLOW
LIQUID METALS
LIQUIDS
LITHIUM
LOSSES
LUMINESCENCE
LUMINOSITY
MATHEMATICAL MODELS
MATHEMATICS
MEASURING METHODS
METALS
NUMERICAL ANALYSIS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
OSCILLATIONS
OXIDATION
PHYSICAL PROPERTIES
PROGRESS REPORT
SINKS
SULFUR COMPOUNDS
SULFUR FLUORIDES
THERMOCHEMICAL PROCESSES