Boundary layer flashback prediction of a low emissions full hydrogen burner for gas turbine applications

Master thesis (2019)

Authors

J. Tober Mechanical Engineering

Contributors

S.A. Klein Energy Technology - Mechanical, Maritime and Materials Engineering (supervisor 1)
J.S. Steimes (supervisor 1)
Faculty
Mechanical Engineering
Copyright: © 2019 Joeri Tober
Renewable energy Analytical model Gas turbine Boundary layer flashback Lean premixed hydrogen combustion
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Published Date

25-01-2019

Language

English

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Faculty

Mechanical Engineering

Abstract

A highly accurate model is presented that predicts boundary layer flashback (BLF) for lean premixed hydrogen combustion. In contrast to existing models, that fail for lean hydrogen mixtures, the present model includes the effect of flame instabilities. The model is applied to study the effect of burner geometry on flashback tendency. A diverging geometry results in a higher flashback tendency due to an adverse pressure gradient. These observations are in line with experimental results. It shows that the BLF model is a tool that could significantly contribute to the development of lean premixed hydrogen burners. This is a great step towards carbon-free industrial gas turbines.