Physics of Turbulent Jet Ignition: Mechanisms and Dynamics of Ultra-lean Combustion

by Sayan Biswas

Overview

This book focuses on developing strategies for ultra-lean combustion of natural gas and hydrogen, and contributes to the research on extending the lean flammability limit of hydrogen and air using a hot supersonic jet. The author addresses experimental methods, data analysis techniques, and results throughout each chapter and:

• Explains the fundamental mechanisms behind turbulent hot jet ignition using non-dimensional analysis

• Explores ignition characteristics by impinging hot jet and multiple jets in relation to better controllability and lean combustion

• Explores how different instability modes interact with the acoustic modes of the combustion chamber.

This book provides a potential answer to some of the issues that arise from lean engine operation, such as poor ignition, engine misfire, cycle-to-cycle variability, combustion instability, reduction in efficiency, and an increase in unburned hydrocarbon emissions. This thesis was submitted to and approved by Purdue University.

Product Details

ISBN-13:	9783319762425
Publisher:	Springer International Publishing
Publication date:	05/04/2018
Series:	Springer Theses
Edition description:	1st ed. 2018
Pages:	216
Product dimensions:	6.10(w) x 9.25(h) x (d)

About the Author

Sayan Biswas received his PhD in Aeronautics and Astronautics from Purdue University in 2017. He is the recipient of numerous awards, including the Magoon Award for Excellence in Teaching from the College of Engineering, Purdue University, in 2017.

Table of Contents

Introduction.- Ignition Mechanisms.- Schlieren Image Velocimetry (SIV).- Supersonic Jet Ignition.- Combustion Instability at Lean Limit.- Ignition by multiple turbulent jets.- Impinging Jet Ignition.- Flame Propagation in Microchannels.- Summary and outlook.- Appendix.- Conclusion.