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首页> 外文期刊>Journal of Heat Transfer >A Hybrid Wavenumber Selection Scheme for Line-By-Line Photon Monte Carlo Simulations in High-Temperature Gases
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A Hybrid Wavenumber Selection Scheme for Line-By-Line Photon Monte Carlo Simulations in High-Temperature Gases

机译:高温气体中逐行光子蒙特卡罗模拟的混合波数选择方案

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摘要

Recently, it has become possible to conduct line-by-line (LBL) accurate radiative heat transfer calculations in spectrally highly nongray combustion systems using the Monte Carlo method. LBL accuracy, in principle, adds little to the computational load as compared to gray calculations. However, when employing the Monte Carlo method, the original scheme for choosing appropriate emission wavenumbers for statistical photon bundles is numerically expensive. An improved wavelength selection scheme has been applied to hypersonic plasmas for Monte Carlo solvers. However, directly applying this improved scheme to combustion gases may cause significant errors. In this paper, a hybrid scheme for wavenumber selection is proposed, significantly decreasing CPU requirements compared to previous work. The accuracy of the new method is established and its time requirements are compared against the previous method.
机译:最近,使用蒙特卡洛方法在光谱高度非灰色的燃烧系统中进行逐行(LBL)的精确辐射传热计算成为可能。与灰色计算相比,LBL精度原则上不会增加​​计算量。然而,当采用蒙特卡洛方法时,为统计光子束选择合适的发射波数的原始方案在数字上昂贵。改进的波长选择方案已应用于蒙特卡罗求解器的高超声速等离子体。但是,将这种改进方案直接应用于燃烧气体可能会导致重大错误。在本文中,提出了一种用于波数选择的混合方案,与以前的工作相比,它大大降低了CPU需求。建立了新方法的准确性,并将其时间要求与以前的方法进行了比较。

著录项

  • 来源
    《Journal of Heat Transfer》 |2013年第8期|084501.1-084501.4|共4页
  • 作者

    Tao Ren; Michael F. Modest;

  • 作者单位

    Department of Mechanical Engineering and Applied Mechanics, University of California, Merced, Merced, CA 95343;

    Department of Mechanical Engineering and Applied Mechanics, University of California, Merced, Merced, CA 95343;

  • 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

    radiative heat transfer; Photon Monte Carlo; wavenumber selection;

    机译:辐射热传递蒙特卡洛光子波数选择;

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