Effect of Nonequilibrium Excitation On the Ignition of Combustible Mixtures

In this work non-combustible gases impact on combustion processes studies is performed. Research was performed in a optically accessible rapid compression machine (RCM) under spark ignition engine conditions. The distribution of the swirl charge in the relation to adopted for analysis sequence of gas delivery to the chamber was varied with regard to the main injection. Authors investigate the influence of these sequence on the combustion and the ignition delay of the main injection and the overall combustion characteristics. The aim of this work is the experimental recognition of possibilities of creating combustible mixtures of light hydrocarbon fuels surrounded by non-combustible gases affecting the function of the inhibitor. Specifying the ability of preparation and combustion of mixtures in such systems enables the scientific analysis of adiabatization of the combustion process of fuel-air mixtures in the operating chambers. Theoretical analysis of the issues indicates possibility of obtaining such a stratification of the charge, that the inactive exhaust gases creating the outer ring surround the combustible mixture inside in such a way as to reduce the amount of heat exchanged between the working medium and the walls of the cylinder.

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Characterisation of aerosol combustible mixtures generated using condensation process

10.1063/1.4704208 ◽

2012 ◽

Author(s):

Aminuddin Saat ◽

Nilabza Dutta ◽

Mazlan A. Wahid

Keyword(s):

Condensation Process ◽

Combustible Mixtures

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Ignition Process of Compound Spray Combustible Mixtures

Dynamics of Heterogeneous Combustion and Reacting Systems ◽

10.2514/5.9781600866258.0306.0316 ◽

1993 ◽

pp. 306-316

Keyword(s):

Ignition Process ◽

Combustible Mixtures

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A Shock Tube Study on the Ignition of the Pocket of Combustible Mixtures

Transactions of the Japan Society of Mechanical Engineers ◽

10.1299/kikai1938.44.3190 ◽

1978 ◽

Vol 44 (385) ◽

pp. 3190-3198

Author(s):

Yoshio YOSHIZAWA ◽

Haruo KAWADA ◽

Yasuhiro TAKAGISHI ◽

Tatsuaki SUGINO

Keyword(s):

Shock Tube ◽

Combustible Mixtures ◽

Tube Study

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The Formation of Stratified Combustible Mixtures in Closed Tubes by Molecular and Convective Diffusions

Journal of Fluids Engineering ◽

10.1115/1.3242490 ◽

1985 ◽

Vol 107 (3) ◽

pp. 348-353 ◽

Cited By ~ 1

Author(s):

O. Badr

Keyword(s):

Theoretical Study ◽

Concentration Profiles ◽

Dimensional Model ◽

One Dimensional ◽

Test Conditions ◽

Experimental Justification ◽

The One ◽

Combustible Mixtures

This paper describes a theoretical study on the formation of stratified combustible mixtures in closed long vertical flame tubes. The concentration profiles of the fuel (methane) in air, just before ignition took place, were predicted using a one-dimensional model involving molecular and convective diffusional processes. Phenomenological and experimental justification of the one-dimensional assumption was given and some of the predicted data were compared with experiment for different test conditions. The model appears to have successfully predicted the concentration profiles in some situations where other models failed.

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