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The motion of discs and spherical fuel particles in combustion burners based on Monte Carlo simulation

机译:基于蒙特卡洛模拟的圆盘和球形燃料颗粒在燃烧器中的运动

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摘要

The position of pellet fuel particles in a burner largely determines their combustion behaviour. This paper addresses the simulated motion of circles and spheres, equivalent to pellet, and their final position in a packed bed subject to a gravitational field confined inside rigid cylindrical walls. A simplified Monte Carlo statistical technique has been described and applied with the standard Metropolis method for the simulation of movement. This simplification provides an easier understanding of the method when applied to solid fuels in granular form, provided that they are only under gravitational forces. Not only have we contrasted one parameter, as other authors, but three, which are radial, bulk and local porosities, via Voronoi tessellation. Our simulations reveal a structural order near the walls, which declines towards the centre of the container, and no pattern was found in local porosity via Voronoi. Results with this simplified method are in agreement with more complex previously published studies.
机译:颗粒燃料颗粒在燃烧器中的位置在很大程度上决定了它们的燃烧性能。本文讨论了等效于颗粒的圆形和球形的模拟运动,以及它们在填充床中的最终位置,该床在有限的刚性圆柱壁内受到引力场的作用。已经描述了一种简化的蒙特卡洛统计技术,并将其与标准Metropolis方法一起用于运动模拟。如果将其应用于颗粒状固体燃料,并且仅在重力的作用下,此简化操作将使该方法更容易理解。与其他作者一样,我们不仅通过Voronoi镶嵌对比了一个参数,而且还对比了三个参数,即径向,整体和局部孔隙率。我们的模拟揭示了壁附近的结构顺序,该结构朝向容器的中心倾斜,并且在Voronoi的局部孔隙中未发现任何模式。这种简化方法的结果与更复杂的先前发表的研究一致。

著录项

  • 来源
    《Energy Conversion & Management》 |2010年第4期|P.795-801|共7页
  • 作者单位

    University of Vigo, E.T.S. Ingenieros Industriales, Lagoas-Marcosende s, 36200-Vigo, Spain;

    University of Vigo, E.T.S. Ingenieros Industriales, Lagoas-Marcosende s, 36200-Vigo, Spain;

    University of Vigo, E.T.S. Ingenieros Industriales, Lagoas-Marcosende s, 36200-Vigo, Spain;

    University of Vigo, E.T.S. Ingenieros Industriales, Lagoas-Marcosende s, 36200-Vigo, Spain;

    University of Vigo, E.T.S. Ingenieros Industriales, Lagoas-Marcosende s, 36200-Vigo, Spain;

    University of Vigo, E.T.S. Ingenieros Industriales, Lagoas-Marcosende s, 36200-Vigo, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    monte carlo; particle movement; solid fuels; combustion burner;

    机译:蒙特卡洛;粒子运动固体燃料;燃烧器;

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