Zhang Propagation and Extinction Studies of Laminar Lean Premixed Syngas/Air Flames

1. Auflage 2018
ISBN: 978-981-10-4615-5
Verlag: Springer Singapore
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 127 Seiten, eBook

Reihe: Springer Theses

This thesis presents pioneering experimental and numerical studies on three aspects of the combustion characteristics of lean premixed syngas/air flames, namely the laminar flame speed, extinction limit and flammability limit. It illustrates a new extinction exponent concept, which enriches the combustion theory.  Above all, the book provides the following: a) a series of carefully measured data and theoretical analyses to reveal the intrinsic mechanisms of the fuel composition effect on the propagation and extinction of lean syngas/air flames; b) a mixing model and correlation to predict the laminar flame speed of multi-component syngas fuels, intended for engineering computations; c) a new “extinction exponent” concept to describe the critical effects of chemical kinetics on the extinction of lean premixed syngas/air flames; and d) the effects and mechanism of the dilution of incombustible components on lean premixed syngas/air flames and the preferential importance among the thermal, chemical and diffusion effects.

Zielgruppe

Research

Autoren/Hrsg.

Zhang, Yang

Inhaltsverzeichnis

Introduction.- Experimental Approach 35.- Numerical Approach.- Laminar flame speed of lean premixed H2/CO/air flames 71.- Extinction limit of lean premixed H2/CO/air flames.- Lower flammability limit of H2/CO mixtures.- Dilution effect on the propagation and extinction of lean premixed syngas/air flames 139.- Conclusion and recommendation.- Nomenclature.