Effect of electrohydrodynamic boundary layers on heat transfer from flame gases

Journal Article · Fri Dec 31 23:00:00 EST 1976 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(77)90091-8· OSTI ID:7289606

Clements, R M ^[1]; Smy, P R

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1. Univ. of Victoria, British Columbia, Can.

The effects of dc electric fields on the heat transfer to a cylindrical calorimeter totally immersed in a seeded propane-air flame are investigated. Because of the enhanced ionization, the calorimeter, when biased negatively, is shown to behave as a cylindrical Langmuir probe in a plasma, with large electric fields only in the immediate vicinity of the calorimeter. The increase in heat transfer is strictly a boundary layer phenomenon; it reaches a maximum of about 10% at the highest attainable density (approximately 10/sup 18//m/sup 3/) and shows good agreement with a simple theory based on sheath-modified flow.

• OSTI ID: 7289606
• Journal Information: Combust. Flame; (United States), Journal Name: Combust. Flame; (United States) Vol. 29:1; ISSN CBFMA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKANES
BOUNDARY LAYERS
ELECTROHYDRODYNAMICS
ENERGY TRANSFER
FLAMES
FLUID MECHANICS
FLUIDS
GASES
HEAT TRANSFER
HYDROCARBONS
HYDRODYNAMICS
LAYERS
MECHANICS
ORGANIC COMPOUNDS
PROPANE