Theoretical Investigation of Particle Behavior on Flame Propagation in Lycopodium Dust Cloud

Alireza Rahbari, Kau Fui Wong, Moslem Akbari Vakilabadi, Alireza Khoeini Poorfar, Abolfazl Afzalabadi

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

The main aim of this research is focused on determining the velocity and particle density profiles across the flame propagation of microlycopodium dust particles. In this model, it is tried to incorporate the forces acting on the particles such as thermophoretic, gravitational, and buoyancy in the Lagrangian equation of motion. For this purpose, it is considered that the flame structure has four zones (i.e., preheat, vaporization, reaction, and postflame zones) and the temperature profile, as the unknown parameter in the thermophoretic force, is extracted from this model. Consequently, employing the Lagrangian equation with the known elements results in the velocity distribution versus the forefront of the combustion region. Satisfactory agreement is achieved between the present model and previously published experiments. It is concluded that the maximum particle concentration and velocity are gained on the flame front with the gradual decrease in the distance away from this location.

Original languageEnglish (US)
Article number012202
JournalJournal of Energy Resources Technology, Transactions of the ASME
Volume139
Issue number1
DOIs
StatePublished - Jan 1 2017

Keywords

  • lycopodium dust particle
  • multiphase flow
  • Numerical model
  • particles dynamic behavior
  • thermophoretic force

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Geochemistry and Petrology

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