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G. Schmidl, A. Burkert, W. Triebel

A Measurement System to Investigate Droplet Size Distributions in Dense Kerosene Sprays

An important fact for an optimised combustion is to realise a homogeneous mixture of fuel and air in the premixing zone as fast as possible during the injection. We realised and applied a measurement system which allows to determine droplet size distributions in dense kerosene sprays spatially and temporally resolved. We imaged simultaneously the Mie scattering and the laser induced fluorescence (LIF) excited by single excimer laser pulses. The ratio of LIF and Mie signals of a spray results in a droplet size distribution (Sauter mean diameter). The measurement set–up was calibrated with well defined single droplets. The diameter of these droplets was accurately determined by morphology dependent resonances (MDR). The applicability of this method for dense technical fuel sprays is demonstrated and some aspects which need special attention are discussed.

tm – Technisches Messen, Oldenbourg Wissenschaftsverlag

Print ISSN: 0171-8096
Volume: 70, 01/2003
Pages: 020

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