Initial characterisation of an auto-ignition burner with dense spray boundary conditions

A. Kourmatzis, P. X. Pham, P. Pandey

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

An initial characterization of a dense-spray auto-ignition burner is presented. The burner, which consists of a multiple-stage atomizer developed earlier in [1-2], is now placed in a vitiated co-flow of hot combustion products. The geometry adopted here simulates the thermal conditions of an engine. An understanding of the flame structure is acquired through examination of digital photographs and microscopic high-speed shadowgraph imaging. The flame stability is dictated either by predominantly mixing and chemical kinetics in the `dilute regime’ or by mixing, chemical kinetics and atomization in the `dense regime’. The degree of atomization at the exit plane is characterized here by calculating the amount of blocked light in a particular measurement volume as a function of both liquid loading and carrier air flow- rate. When the flame is in the dilute regime, an increase in the blockage area results in adecrease in lift-off height, however, in the dense regime the opposite is observed.
Original languageEnglish
Title of host publicationMCS 2013
Subtitle of host publication8th Mediterranean Combustion Symposium : Proceedings
Place of PublicationIzmir, Turkey
PublisherThe Combustion Institute
Number of pages12
Publication statusPublished - 2013
Externally publishedYes
EventMediterranean Combustion Symposium (8th : 2013) - Izmir, Turkey
Duration: 8 Sep 201313 Sep 2013

Conference

ConferenceMediterranean Combustion Symposium (8th : 2013)
CityIzmir, Turkey
Period8/09/1313/09/13

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