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Theses

Mesures couplées de richesse et de vitesse pour la combustion instationnaire en écoulement stratifié

Abstract : Simultaneous knowledge of local velocity and equivalence ratio is very important in numerous combustion applications and especially for direct injection engines where the flame propagates through a heterogeneous concentration distribution of fuel-air mixture. This study reproduce heterogeneities of equivalence ratio with propane and air in a constant volume combustion vessel. The local influence of velocity and equivalence ratio on the propagation of a spark-ignited flame is studied. To create a stratification, a rich axysimetric pulsed jet is injected in a leaner chamber and the mixing is ignited. Two optical diagnostics are used simultaneously, PIV for velocity and FARLIF for equivalence ratio, with or without combustion. All properties and range of applications of PIV and FARLIF have been verified. These methods were then used to study the characteristics of stratified combustion
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https://tel.archives-ouvertes.fr/tel-00008850
Contributor : Nathalie Pasquier-Guilbert <>
Submitted on : Wednesday, March 23, 2005 - 10:48:03 AM
Last modification on : Tuesday, February 5, 2019 - 11:44:12 AM
Long-term archiving on: : Friday, April 2, 2010 - 9:11:30 PM

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  • HAL Id : tel-00008850, version 1

Citation

Nathalie Pasquier-Guilbert. Mesures couplées de richesse et de vitesse pour la combustion instationnaire en écoulement stratifié. Energie électrique. Université de Rouen, 2004. Français. ⟨tel-00008850⟩

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