On Laminar Rich Premixed Polydisperse Spray Flame Propagation with Heat Loss

Author:

Kats G.1,Greenberg J. B.1ORCID

Affiliation:

1. Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, 32000 Haifa, Israel

Abstract

A mathematical analysis of laminar premixed spray flame propagation with heat loss is presented. The analysis makes use of a distributed approximation of the Arrhenius exponential term in the reaction rate expression and leads to an implicit expression for the laminar burning velocity dependent on the spray-related parameters for the fuel, gas-related parameters and the intensity of the heat losses. It is shown that the initial droplet load, the value of the evaporation coefficient, and the initial size distribution are the spray-related parameters which exert an influence on the onset of extinction. The combination of these parameters governs the manner in which the spray heat loss is distributed spatially and it is this feature that is the main factor, when taken together with volumetric heat loss, which determines the spray’s impact on flame propagation and extinction.

Publisher

Hindawi Limited

Subject

Energy Engineering and Power Technology,Condensed Matter Physics,Fuel Technology,General Chemical Engineering

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Numerical simulation of hemispherical hydrogen–air flame propagation with heat losses;Journal of Physics: Conference Series;2020-05-01

2. Forced thermal ignition of a polydisperse fuel spray;Combustion Science and Technology;2018-02-26

3. Investigation of the Influence of Microexplosions on a Laminar Premixed Water-in-Fuel Emulsion Spray Flame;Proceedings ILASS–Europe 2017. 28th Conference on Liquid Atomization and Spray Systems;2017-09-06

4. Forced ignition of turbulent spray flames;Proceedings of the Combustion Institute;2017

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