Analysis of ethylene-oxygen combustion in micro-pipes

Demirgok, BerkDepartment of Mechanical and Aerospace Engineering, West Virginia University, WV, Morgantown, United States (author)

Propagation of premixed stoichiometric ethylene-oxygen flames in cylindrical pipes of sub/near-millimeter radii is investigated-computationally, analytically and experimentally. Namely, various stages of flame evolution such as quasi-isobaric, exponential acceleration; its moderation due to gas compression; and eventual saturation to the Chapmen-Jouget deflagration are consdiered. Specifically, we have determined the dynamics and morphology of the flame front, its propagation velocity and acceleration rate. Due to viscous heating, the entire process can be followed by the detonation initiation ahead of the flame front. The computational component of this research includes numerical solution of the hydrodynamics and combustion equations with chemical kinetics represented by one-step Arrhenius reaction. The theoretical model accounts for small, but finite Mach number; and it assumes a plane-parallel flame-generated flow, zero flame thickness as well as large thermal expansion and flame-related Reynolds number. The overall study bridges the gap between the experiments of Wu et al. [Proc. Combust. Inst. 31 (2007) 2429] and the analytical formulation of Akkerman et al. [Combust. Flame 145 (2006) 206].

Almeyda, Orlando Jesus UgarteDepartment of Mechanical and Aerospace Engineering, West Virginia University, WV, Morgantown, United States (author)
Akkerman, V'yacheslavDepartment of Mechanical and Aerospace Engineering, West Virginia University, WV, Morgantown, United States (author)
Valiev, DamirDepartment of Mechanical and Aerospace Engineering, Princeton University, NJ, Princeton, United States (author)
Bychkov, Vitaly,1968-Umeå universitet,Institutionen för fysik(Swepub:umu)viby0001 (author)
Wu, Ming-HsunDepartment of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan (author)
Department of Mechanical and Aerospace Engineering, West Virginia University, WV, Morgantown, United StatesDepartment of Mechanical and Aerospace Engineering, Princeton University, NJ, Princeton, United States (creator_code:org_t)

In:Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2013: Combustion Institute, s. 155-1609781629937199

By the author/editor: Demirgok, Berk; Almeyda, Orlando ...; Akkerman, V'yach ...; Valiev, Damir; Bychkov, Vitaly, ...; Wu, Ming-Hsun

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Fluid Mechanics ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Energy Engineeri ...

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