Influence of Flow Swirling on the Aerothermodynamic Behaviour of Flames

M. T. Parra-Santos; V. Mendoza-Garcia; Robert-Zoltán Szász; A. N. Gutkowski; F. Castro-Ruiz

doi:10.1134/S0010508215040048

Influence of Flow Swirling on the Aerothermodynamic Behaviour of Flames

M. T. Parra-Santos, V. Mendoza-Garcia, Robert-Zoltán Szász, A. N. Gutkowski, F. Castro-Ruiz

Fluid Mechanics

Research output: Contribution to journal › Article › peer-review

Abstract

The present work focuses on the numerical simulation of diffusive flames in a confined high-swirl burner. Navier-Stokes equations expressed for a time-dependent, compressible, and three-dimensional flow with finite-rate kinetics are solved for lean methane/air mixtures. A simplified mechanism is used to model the combustion. Non-reactive and reactive cases are contrasted for a swirl number of 0.95. Three flames for swirl numbers of 0, 0.6, and 0.95 are analyzed. In swirling flows, the inner recirculation zone is mainly composed of reaction products, which help in ignition of the incoming fuel. Moreover, the forward stagnation point plays an important role, leading to an azimuthal deflection of the flame front.

Original language	English
Pages (from-to)	424-430
Journal	Combustion, Explosion, and Shock Waves
Volume	51
Issue number	4
DOIs	https://doi.org/10.1134/S0010508215040048
Publication status	Published - 2015

Subject classification (UKÄ)

Fluid Mechanics and Acoustics

Free keywords

reactive flow
recirculation zone
CFD
swirling flows
stretched flames

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10.1134/S0010508215040048

Cite this

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title = "Influence of Flow Swirling on the Aerothermodynamic Behaviour of Flames",

abstract = "The present work focuses on the numerical simulation of diffusive flames in a confined high-swirl burner. Navier-Stokes equations expressed for a time-dependent, compressible, and three-dimensional flow with finite-rate kinetics are solved for lean methane/air mixtures. A simplified mechanism is used to model the combustion. Non-reactive and reactive cases are contrasted for a swirl number of 0.95. Three flames for swirl numbers of 0, 0.6, and 0.95 are analyzed. In swirling flows, the inner recirculation zone is mainly composed of reaction products, which help in ignition of the incoming fuel. Moreover, the forward stagnation point plays an important role, leading to an azimuthal deflection of the flame front.",

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author = "Parra-Santos, {M. T.} and V. Mendoza-Garcia and Robert-Zolt{\'a}n Sz{\'a}sz and Gutkowski, {A. N.} and F. Castro-Ruiz",

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T1 - Influence of Flow Swirling on the Aerothermodynamic Behaviour of Flames

AU - Parra-Santos, M. T.

AU - Mendoza-Garcia, V.

AU - Szász, Robert-Zoltán

AU - Gutkowski, A. N.

AU - Castro-Ruiz, F.

PY - 2015

Y1 - 2015

N2 - The present work focuses on the numerical simulation of diffusive flames in a confined high-swirl burner. Navier-Stokes equations expressed for a time-dependent, compressible, and three-dimensional flow with finite-rate kinetics are solved for lean methane/air mixtures. A simplified mechanism is used to model the combustion. Non-reactive and reactive cases are contrasted for a swirl number of 0.95. Three flames for swirl numbers of 0, 0.6, and 0.95 are analyzed. In swirling flows, the inner recirculation zone is mainly composed of reaction products, which help in ignition of the incoming fuel. Moreover, the forward stagnation point plays an important role, leading to an azimuthal deflection of the flame front.

AB - The present work focuses on the numerical simulation of diffusive flames in a confined high-swirl burner. Navier-Stokes equations expressed for a time-dependent, compressible, and three-dimensional flow with finite-rate kinetics are solved for lean methane/air mixtures. A simplified mechanism is used to model the combustion. Non-reactive and reactive cases are contrasted for a swirl number of 0.95. Three flames for swirl numbers of 0, 0.6, and 0.95 are analyzed. In swirling flows, the inner recirculation zone is mainly composed of reaction products, which help in ignition of the incoming fuel. Moreover, the forward stagnation point plays an important role, leading to an azimuthal deflection of the flame front.

KW - reactive flow

KW - recirculation zone

KW - CFD

KW - swirling flows

KW - stretched flames

U2 - 10.1134/S0010508215040048

DO - 10.1134/S0010508215040048

M3 - Article

SN - 0010-5082

VL - 51

SP - 424

EP - 430

JO - Combustion, Explosion, and Shock Waves

JF - Combustion, Explosion, and Shock Waves

IS - 4

ER -

Influence of Flow Swirling on the Aerothermodynamic Behaviour of Flames

Abstract

Subject classification (UKÄ)

Free keywords

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