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Annual Review of Fluid Mechanics, 2014
In many continuous combustion processes, such as those found in aeroengines or gas turbines, the flame is stabilized by a swirling flow formed by aerodynamic swirlers. The dynamics of such swirling flames is of technical and fundamental interest. This article reviews progress in this field and begins with a discussion of the swirl number, a parameter ...
Jonas Moeck +2 more
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In many continuous combustion processes, such as those found in aeroengines or gas turbines, the flame is stabilized by a swirling flow formed by aerodynamic swirlers. The dynamics of such swirling flames is of technical and fundamental interest. This article reviews progress in this field and begins with a discussion of the swirl number, a parameter ...
Jonas Moeck +2 more
exaly +2 more sources
IMPACT OF STRETCH ON THE FLAME DYNAMICS OF LAMINAR PREMIXED FLAMES
Inter-Noise 2022, 2023Flame transfer functions (FTF) of laminar premixed flames acoustically forced are analytically investigated and modelled. The study is based on the linearized G-equation, which is used to kinematically track the flame front. In order to incorporate combustion properties, the laminar consumption speed is considered varying depending on the flame front ...
Edoardo Scoletta, Wolfgang Polifke
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Numerical simulation of dynamics of premixed flames: flame instability and vortex–flame interaction
Progress in Energy and Combustion Science, 2005Abstract The characteristics of cellular flames generated by intrinsic instability has been studied using two-dimensional (2-D) and three-dimensional (3-D) unsteady calculations of reactive flows, based on the compressible Navier–Stokes equation.
Satoshi Kadowaki, Tatsuya Hasegawa
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Dynamics of premixed hydrogen/air flames in microchannels
Combustion and Flame, 2008 The stabilization and dynamics of lean (φ = 0.5) premixed hydrogen/air atmospheric-pressure flames in planar microchannels of prescribed wall temperature are investigated with respect to the inflow velocity and channel height (0.3 to 1.0 mm) using direct
John Mantzaras +2 more
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Nonlinear Dynamics of Cellular Flames
SIAM Journal on Applied Mathematics, 1992The problem of a flame stabilized by a line source of fuel in the cellular regime, i.e., $L < 1$,where L is the Lewis number, is solved numerically. It is found that as L is decreased, transitions from stationary axisymmetric to stationary cellular to nonstationary cellular flames occur.
Bayliss, Alvin, Matkowsky, Bernard J.
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On the dynamics of anchored flames
Combustion and Flame, 1990The dynamic and the shape of an anchored premixed flame are analyzed as the result of the sum of wrinkles convected along the flame and of the wrinkles locally induced by the flow. The linear approximation leads to an interference integral that describes the shape as a function of time.
L. Boyer, J. Quinard
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On the Dynamics of a Bunsen Flame
2006The stabilization of a Bunsen flame above the burner rim is simulated using the method of characteristics. Oscilliations of the flame front and of its area due to flow oscilliations are computed.
Bondar, M.L. +1 more
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Novel perspectives on the dynamics of premixed flames
Combustion and Flame, 2013The present study develops an alternative perspective on the response of premixed flames to flow perturbations. In particular, the linear response of laminar premixed flames to velocity perturbations is examined in the time domain, and the corresponding impulse response functions are determined analytically.
Blumenthal, RS +3 more
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Laser excitation dynamics of OH in flames
Applied Optics, 1980The response of OH in flames to laser excitation is studied in some detail. The population balance equations are solved numerically using an empirical model for the rotational relaxation rates. The empirical model parameters are fit to experimental spectra using a linear regression procedure and the resulting description of OH behavior is shown to be ...
C, Chan, J W, Daily
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