Abstract
Formation of surface carbonaceous deposits at inner surface of two classes of simulated jet engine burner feed arm including a straight tube as well as two tubes with sudden expansion/contraction was studied using “Aviation Fuel Thermal Stability Test Unit (AFTSTU)”. The generated results indicate that phenomena such as stagnant flow formation, flow separation and vena contracta have a substantial impact on surface deposition. Commercial “Computational Fluid Dynamics (CFD)” package, ANSYS Fluent was used to interpret the impact of flow features and heat transfer characteristics on surface deposition. The experimental data obtained in this work were used in a one dimensional heat transfer model for prediction of deposit thickness in simulated burner feed arms. Subsequently, the simulated burner feed arm with contraction/expansion structure were sectioned and prepared for deposit visualisation with “Scanning Electron Microscopy (SEM)”. The results of visualised deposits are consistent with one dimensional heat transfer calculation. The novel set of experimental data presented in this work provides a basis for the construction of predictive models for calculation of deposit growth and total deposit mass in fuel injection system. A description of the model will be addressed in the second paper of this work which is currently under preparation.
Original language | English |
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Pages (from-to) | 534-543 |
Number of pages | 10 |
Journal | Fuel |
Volume | 186 |
DOIs | |
Publication status | Published - 15 Dec 2016 |
Bibliographical note
Funding Information:This paper is based on research sponsored by 7th Framework Programme for Research and Technological Development , under grant agreement 211843 .
Publisher Copyright:
© 2016 The Authors
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
Keywords
- Aviation fuel
- Burner feed arm
- Fuel injection system
- Surface deposition
- Thermal oxidative stability
ASJC Scopus subject areas
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
- Organic Chemistry