Time-resolved gas temperatures in the oscillating turbulent flow of a pulse combustor tail pipe

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Combustion and Flame; (USA)

DOI:https://doi.org/10.1016/0010-2180(90)90112-5· OSTI ID:6805698

Dec, J E ^[1]; Keller, J O ^[2]

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1. Michigan Univ., Ann Arbor, MI (USA)
2. Sandia National Labs., Livermore, CA (USA). Combustion Research Faclity

This paper reports the cyclic behavior of the gas temperature in the oscillating turbulent flow in a pulse combustor tail pipe studied using two-line atomic fluorescence. In this flow, the oscillations result from an acoustic resonance, and have amplitudes of up to 5 times the mean velocity. Oscillation frequencies were varied from 67 to 101 Hz. Spatially resolved temperature measurements were made to within 400 {mu}m of the wall, providing cycle-resolved profiles of the temperature and the random temperature fluctuations. The combustor-cycle phase relationships among the gas temperature, random-temperature-fluctuation intensity, velocity, and combustion chamber pressure, are compared.

• OSTI ID: 6805698
• Journal Information: Combustion and Flame; (USA), Vol. 80:3; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
PULSE COMBUSTORS
TEMPERATURE GRADIENTS
WALLS
HEAT FLUX
GASES
SPATIAL RESOLUTION
TEMPERATURE MEASUREMENT
TURBULENT FLOW
COMBUSTORS
FLUID FLOW
FLUIDS
RESOLUTION
421000* - Engineering- Combustion Systems
420400 - Engineering- Heat Transfer & Fluid Flow
400800 - Combustion
Pyrolysis
& High-Temperature Chemistry