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Fuel gallery residence time & heat transfer experimental technique development for gas turbine fuel injectors

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conference contribution
posted on 2017-10-02, 09:56 authored by Z. Hamadache, Adrian SpencerAdrian Spencer
Two experimental techniques are presented in this paper looking at flows in complicated passages such as those of internal fuel galleries in modern fuel spray nozzles. The first relates to residence time measurement using a dye wash-out technique and the second to surface heat transfer measurement using thermochromic liquid crystals. Dye concentration can be sufficiently calibrated making this technique easily and successfully applicable to residence time measurement within the chosen geometry. This experiment highlighted areas within the geometry where fuel is likely to become trapped in a recirculation and so leading to high residence times. The liquid crystal method proved more challenging due to the susceptibility of the crystals to fail under water. One set of measurements was gathered and showed that areas of high fuel residence time also correspond to low heat transfer coefficient. Small volumes of slow or stagnant fuel will be susceptible to soaking more heat increasing the risk of coke formation.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

17th International Symposium on Applications of Laser Techniques to Fluid Mechanics

Citation

HAMADACHE, Z. and SPENCER, A., 2014. Fuel gallery residence time & heat transfer experimental technique development for gas turbine fuel injectors. Presented at the 17th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, 7-10th July.

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

2014-01-01

Publication date

2014

Notes

This is a conference paper.

Language

en

Location

Lisbon, Portugal.

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