Laminar flame propagation in a premixed particle cloud: effect of vaporization rate

Vazquez Espi, Carlos (2020). Laminar flame propagation in a premixed particle cloud: effect of vaporization rate. "Combustion Science and Technology", v. 192 (n. 5); pp. 804-831. ISSN 0010-2202. https://doi.org/10.1080/00102202.2019.1594798.

Description

Title: Laminar flame propagation in a premixed particle cloud: effect of vaporization rate
Author/s:
  • Vazquez Espi, Carlos
Item Type: Article
Título de Revista/Publicación: Combustion Science and Technology
Date: 2020
ISSN: 0010-2202
Volume: 192
Subjects:
Freetext Keywords: Vaporization; Particle cloud; Flame propagation; Flamespeed; Volatile fuel
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Matemática Aplicada a la Ingeniería Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The propagation of a flame in a mixture of air and small solid fuel particles is analyzed. It is assumed that solid particles suffer a vaporization, after which the resulting gaseous fuel mixes with air and a premixed combustion occurs. The combustion reaction is modeled by a global reaction of Arrhenius type with large activation energy and the analysis is carried out using large activation energy asymptotics. The structure of the flow is similar to a classical premixed flame, but with some particular features due to the vaporization, whose characteristic time, through the appropriate Damköhler number, plays an important role. Lean and rich mixtures, defined from the solid fuel content, are considered, as well as the effect of Lewis numbers and heat of vaporization. The analysis shows that rich mixtures can be lean or rich in the gaseous phase depending on the value of the vaporization Damköhler number . In all regimes the structure of flow and the flame speed are obtained.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainDPI2017-86547-C2-2-PUnspecifiedUnspecifiedSprays y emulsiones de partículas micrométricas. Generación vía microdripping y electro coflow, neutralización y deposición

More information

Item ID: 63999
DC Identifier: https://oa.upm.es/63999/
OAI Identifier: oai:oa.upm.es:63999
DOI: 10.1080/00102202.2019.1594798
Official URL: https://www.tandfonline.com/doi/abs/10.1080/00102202.2019.1594798
Deposited by: Memoria Investigacion
Deposited on: 12 Jan 2022 10:44
Last Modified: 12 Jan 2022 10:44
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