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A multi-zone self-similar chemistry tabulation with application to auto-ignition including cool-flames effects

机译：一种多区域自相似化学表格，可应用于包括冷焰效应的自燃

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摘要

Chemistry tabulation has been widely used in the literature to introduce some of the major subtleties of detailed chemistry in turbulent flame simulations. In the case of combustion systems featuring numerous degrees of freedom - such as progress of reaction, equivalence ratio, pressure, enthalpy, dilution by burnt gases - the rapidly growing size of the lookup-table file becomes one of the factor limiting chemistry introduction in high performance computing, because the database needs to be loaded on every processor whose memory is limited. A multi-zone self-similar chemistry tabulation technique is proposed to over come this limitation, in both the cool-flame and the high-temperature flame regimes. A formalism is first developed for seeking self-similar behavior in auto-ignition. The resulting tabulation strategy is limited to the storage of a few profiles, to which algebraic relations are added. In the case of auto-igniting mix ture, it is shown that major species of n-heptane-air and methane-air combustion can be captured by a single-set of self-similar profiles, opening perspectives for chemistry tabulation of multi-component liquid fuels.
机译：化学制表已在文献中广泛使用，以介绍湍流火焰模拟中详细化学的一些主要细微差别。对于具有多种自由度的燃烧系统-例如反应进程，当量比，压力，焓，燃烧气体稀释-查找表文件的快速增长成为限制化学反应引入的因素之一。性能计算，因为需要在内存有限的每个处理器上加载数据库。提出了一种多区域自相似化学制表技术，以克服在冷火焰和高温火焰两种情况下的这种局限性。形式主义首先被开发用于在自动点火中寻求自相似行为。最终的制表策略仅限于存储一些轮廓，并向其中添加了代数关系。在自动点火混合物的情况下，表明正庚烷-空气和甲烷-空气燃烧的主要种类可以通过一组自相似曲线来捕获，这为多组分化学制表开辟了前景液体燃料。

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  • 来源
    《Fuel》 |2012年第1期|p.87-92|共6页
  • 作者

    G. Ribert; K. Wang; L Vervisch;

  • 作者单位

    CORIA CNRS & INSA-Rouen, Campus du Madrillet, Avenue de I'Universite. BP 8, 76801 Saint Etienne du Rouvray Cedex, France;

    CORIA CNRS & INSA-Rouen, Campus du Madrillet, Avenue de I'Universite. BP 8, 76801 Saint Etienne du Rouvray Cedex, France;

    CORIA CNRS & INSA-Rouen, Campus du Madrillet, Avenue de I'Universite. BP 8, 76801 Saint Etienne du Rouvray Cedex, France;

  • 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

    auto-ignition; cool-flame; self-similarity; tabulation;

    机译：自燃;冷焰;自相似;列表;

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