The dependence of chemistry on the inlet equivalence ratio in vortex-flame interactions

Bell, John B.; Brown, Nancy J.; Day, Marc; Frenklach, Michael; Grcar, Joseph F.; Tonse, S.

doi:10.1016/s0082-0784(00)80598-6

Cited by 23 publications

(11 citation statements)

References 28 publications

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“…Example laminar fluid-flame interaction studies include experimental validation and analyses of the interaction of single vortical structures with a rich methane-air flame [37]. In [25,38], the control algorithm discussed above was presented and used to explore the response of methaneair flames in the presence of turbulence, based on the detailed chemistry and transport models in the GRI-Mech 3.0 mechanism [39].…”

Section: Computational Methodologymentioning

confidence: 99%

Turbulence effects on cellular burning structures in lean premixed hydrogen flames

Day

Bell

Bremer

et al. 2009

Combustion and Flame

122

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Section: Computational Methodologymentioning

confidence: 99%

Turbulence effects on cellular burning structures in lean premixed hydrogen flames

Day

Bell

Bremer

et al. 2009

Combustion and Flame

122

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“…The overall numerical scheme has been demonstrated to converge with secondorder accuracy and has been extensively validated in a variety of configurations. Two-dimensional laminar flames including vortex-flame interaction were studied in Bell et al (2000) and emissions from laminar diffusion flames in Bell et al (2002b) and Sullivan et al (2002). The methodology has also been used for three-dimensional DNS of a turbulent premixed flame with detailed chemistry for methane (Bell, Day & Grcar 2002a) and hydrogen (Day et al 2009a).…”

Section: Numerical Approachmentioning

confidence: 99%

Turbulence–flame interactions in lean premixed hydrogen: transition to the distributed burning regime

2011

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The response of lean (ϕ 6 0.4) premixed hydrogen flames to maintained homogeneous isotropic turbulence is investigated using detailed numerical simulation in an idealised three-dimensional configuration over a range of Karlovitz numbers from 10 to 1562. In particular, a focus is placed on turbulence sufficiently intense that the flames can no longer be considered to be in the thin reaction burning regime. This transition to the so-called distributed burning regime is characterised through a number of diagnostics, and the relative roles of molecular and turbulent mixing processes are examined. The phenomenology and statistics of these flames are contrasted with a distributed thermonuclear flame from a related astrophysical study.

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“…In particular, we discuss the extension of the low Mach number methodology to degenerate equations of state typical of stellar environments. For applications of this approach see Bell et al [17] and Bell et al [18]. We note that in this paper we will focus on fully resolving both the reaction and diffusion length scales; consequently, computational requirements will limit the domains of interest to at best a few meters in each linear dimension.…”

Section: Introductionmentioning

confidence: 99%

Adaptive low Mach number simulations of nuclear flame microphysics

Bell

Day

Rendleman

et al. 2004

Journal of Computational Physics

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We introduce a numerical model for the simulation of nuclear flames in Type Ia supernovae. This model is based on a low Mach number formulation that analytically removes acoustic wave propagation while retaining the compressibility effects resulting from nuclear burning. The formulation presented here generalizes low Mach number models used in combustion that are based on an ideal gas approximation to the arbitrary equations of state such as those describing the degenerate matter found in stellar material. The low Mach number formulation permits time steps that are controlled by the advective time scales resulting in a substantial improvement in computational efficiency compared to a compressible formulation. We briefly discuss the basic discretization methodology for the low Mach number equations and their implementation in an adaptive projection framework. We present validation computations in which the computational results from the low Mach number model are compared to a compressible code and present an application of the methodology to the Landau-Darrieus instability of a carbon flame.

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The dependence of chemistry on the inlet equivalence ratio in vortex-flame interactions

Cited by 23 publications

References 28 publications

Turbulence effects on cellular burning structures in lean premixed hydrogen flames

Turbulence effects on cellular burning structures in lean premixed hydrogen flames

Turbulence–flame interactions in lean premixed hydrogen: transition to the distributed burning regime

Adaptive low Mach number simulations of nuclear flame microphysics

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