HC quench layer formation in combustion processes. Technical progress report, January-April 1980

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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 … continued below

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17 pages

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Lavoie, G. A. June 1, 1980.

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Description

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.

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17 pages

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NTIS, PC A02/MF A01.

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Office of Scientific & Technical Information Technical Reports

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  • June 1, 1980

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  • Jan. 22, 2018, 7:23 a.m.

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  • July 26, 2019, 12:52 p.m.

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Lavoie, G. A. HC quench layer formation in combustion processes. Technical progress report, January-April 1980, report, June 1, 1980; United States. (https://digital.library.unt.edu/ark:/67531/metadc1053335/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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