HC quench layer formation in combustion processes. Technical progress report, January-April 1980
The project is aimed at understanding wall quenching and other processes responsible for surface generated hydrocarbons in combustion under engine-like conditions. The study concerns the effects of turbulence on the evolution of hydrocarbons. At the conclusion of the program, significant new experimental information will have been generated and an analytical model of the fluid mechanics and some aspects of the chemistry of quenching will be formulated. The work is divided into three tasks: (1) combustion bomb experiments to measure the effect of turbulence on the chemical species near the cold surface; (2) combustion bomb experiments using a similar turbulence generating device, to fully characterize the flow and turbulence in the vicinity of the quenching surface; and (3) an analytical study to characterize fluid mechanical scales of interest in the boundary layer and to find an analytical solution to describe the evolution of the layer. Significant areas of progress during the reporting period are: (1) the sampling valve data obtained previously in the Ford spherical bomb under quiescent firing conditions have been analyzed and interpreted; (2) the solenoid-operated charging system has been set up to generate turbulence in the bomb, and the inlet flow has been characterized in terms of pressure, velocity, turbulence, and temperature histories; and (3) an analysis leading to a simplified model for the turbulent quench layer has been obtained.
- Research Organization:
- Ford Motor Co., Dearborn, MI (USA). Fuels and Lubricants Dept.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-79ET15303
- OSTI ID:
- 5068940
- Report Number(s):
- DOE/ET/15303-T4
- Country of Publication:
- United States
- Language:
- English
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COMBUSTION CHAMBERS
COMBUSTION KINETICS
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AIR POLLUTION ABATEMENT
INTERNAL COMBUSTION ENGINES
ACETYLENE
COMBUSTION
ETHANE
ETHYLENE
GAS FLOW
MATHEMATICAL MODELS
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RESEARCH PROGRAMS
TURBULENCE
ALKANES
ALKENES
ALKYNES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
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330704* - Emission Control- Hydrocarbons
330100 - Internal Combustion Engines