Influence of burner rim configuration on polyhedral flames

Li, Chaoxiang; Maruta, Kaoru

doi:10.1109/iceice.2011.5776914

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Simulation calculation method is the most commonly method used in the research of optimum heating institution because of its convenient, quick, accurate and reliable characteristic [2]. Based on the reheat furnace mathematical model, the simulate calculation has been done in view of the different production conditions, the optimum heating institution could be got to guide practical operation of the reheating furnace.…”

Section: Introductionmentioning

confidence: 99%

Application of the Tabu Search Algorithm on Solving the Optimum Heating Institution of Reheating Furnace

Yang

Jiang

Zhang

et al. 2011

AMM

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With the aim of minimizing the energy consumption cost and taking the billet heating quality as the constraint condition, a mathematical model was established based on the billet heating model to solve the optimum heat institution of the reheating furnace. The tabu search algorithm was employed to solve the model. The results of the industrial production data optimization showed that the proposed mathematical model and the solving method could fully meet the practical production demand of the reheating furnace. In addition to satisfying the heating quality requirements, the energy consumption is reduced and the oxidation loss is decreased. Compared with the original one, the heating institution obtained from the mentioned model and algorithm had a better performance on energy efficiency.

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Section: Introductionmentioning

confidence: 99%

Application of the Tabu Search Algorithm on Solving the Optimum Heating Institution of Reheating Furnace

Yang

Jiang

Zhang

et al. 2011

AMM

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Structures of Laminar Lean Premixed H2/CH4/Air Polyhedral Flames: Effects of Flow Velocity, H2 Content and Equivalence Ratio

Shi,

Breicher,

Schultheis

et al. 2024

Flow Turbulence Combust

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Polyhedral Bunsen flames, induced by hydrodynamic and thermo-diffusive instabilities, are characterized by periodic trough and cusp cellular structures along the conical flame front. In this study, the effects of flow velocity, hydrogen content, and equivalence ratio on the internal cellular structure of premixed fuel-lean hydrogen/methane/air polyhedral flames are experimentally investigated. A high-spatial-resolution one-dimensional Raman/Rayleigh scattering system is employed to measure the internal scalar structures of polyhedral flames in troughs and cusps. Planar laser-induced fluorescence of hydroxyl radicals and chemiluminescence imaging measurements are used to quantify the flame front morphology. In the experiments, stationary polyhedral flames with varying flow velocities from 1.65 to 2.50 m/s, hydrogen contents from 50 to 83%, and equivalence ratios from 0.53 to 0.64 are selected and measured. The results indicate that the positively curved troughs exhibit significantly higher hydrogen mole fractions and local equivalence ratios compared to the negatively curved cusps, due to the respective focusing/defocusing effect of trough/cusp structure on highly diffusive hydrogen. The hydrogen mole fraction and local equivalence ratio differences between troughs and cusps are first increased and then decreased with increasing measurement height from 5 to 13 mm, due to the three-dimensional effect of the flame front. With increasing flow velocity from 1.65 to 2.50 m/s, the hydrogen mole fraction and local equivalence ratio differences between troughs and cusps decrease, which is attributed to the overall decreasing curvatures in troughs and cusps due to the decreased residence time and increased velocity-induced strain. With increasing hydrogen content from 50 to 83%, the hydrogen mole fraction and local equivalence ratio differences between troughs and cusps are amplified, due to the enhanced effects of the flame front curvature and the differential diffusion of hydrogen. With increasing equivalence ratio from 0.53 to 0.64, a clear increasing trend in hydrogen mole fraction and equivalence ratio differences between troughs and cusps is observed at constant flow velocity condition, which is a trade-off result between increasing effective Lewis number and increasing curvatures in troughs and cusps.

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Influence of burner rim configuration on polyhedral flames

Cited by 2 publications

References 11 publications

Application of the Tabu Search Algorithm on Solving the Optimum Heating Institution of Reheating Furnace

Application of the Tabu Search Algorithm on Solving the Optimum Heating Institution of Reheating Furnace

Structures of Laminar Lean Premixed H2/CH4/Air Polyhedral Flames: Effects of Flow Velocity, H2 Content and Equivalence Ratio

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