IR instrumentation dedicated to the experimental validation of evaporating and burning droplets temperature models

Nicolas Naudin; Jean A. Farre; Dominique Bissieres; Gerard Lavergne

doi:10.1117/12.218266

8 September 1995 IR instrumentation dedicated to the experimental validation of evaporating and burning droplets temperature models

Nicolas Naudin, Jean A. Farre, Dominique Bissieres, Gerard Lavergne

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Proceedings Volume 2552, Infrared Technology XXI; (1995) https://doi.org/10.1117/12.218266
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The purpose of the work described in this paper is to study experimentally the fuel droplet temperature behavior in order to better understand the processes of the fuel injected in combustion chambers of engines and to validate theoretical models of droplets vaporization. This paper describes the temperature measurement of small fuel droplets using an IR detection system, composed of two coupled off-axis parabolic mirrors and a MCT LWIR detector. The system measures the temperature behavior of a chain of droplets with equal diameter and spacing. Our system has been used to quantify the temperature drop associated with 200 micrometer diameter droplets moving at a velocity of greater than 5 m/s in ambient air. Finally, we describe a feasibility study of how to do this measurement when the droplets are inside a flame. Initial experimental results are presented.

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Nicolas Naudin, Jean A. Farre, Dominique Bissieres, and Gerard Lavergne "IR instrumentation dedicated to the experimental validation of evaporating and burning droplets temperature models", Proc. SPIE 2552, Infrared Technology XXI, (8 September 1995); https://doi.org/10.1117/12.218266

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