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首页> 外文期刊>International Journal of Heat and Mass Transfer >Advection and the self-heating of organic porous media
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Advection and the self-heating of organic porous media

机译：对流和有机多孔介质的自热

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摘要

Self-heating is commonly observed when organic materials such as biosolids, coal, food grains and compost are stockpiled. A convection-diffusion model is presented that accounts for the roles of advection and the transport of oxygen in the self-heating process, as well as the development of an empirical correlation between dimensionless Darcy number, Frank-Kamenetskii parameter and pile aspect ratio, to predict the critical permeability above which thermal runaway can be avoided. It is apparent that the permeability of the stockpile determines the likelihood of the thermal runaway. However, the solids that form a stockpile are poly-disperse and it is essential to determine an effective permeability. This has been achieved using experimental data on biosolids obtained from a wastewater treatment plant in Australia. With this method the model is used to demonstrate how the permeability of a stockpile might be adjusted to reduce the incidence of thermal runaway.
机译：储存生物固体，煤，粮食和堆肥等有机材料时，通常会观察到自热。提出了一个对流扩散模型，该模型考虑了对流和氧气在自热过程中的作用，以及无量纲达西数，Frank-Kamenetskii参数和堆长宽比之间的经验相关性的发展。预测临界渗透率，超过该临界渗透率可以避免热失控。显然，库存的渗透性决定了热失控的可能性。但是，形成储备的固体是多分散的，因此必须确定有效的渗透率。这是通过使用从澳大利亚废水处理厂获得的生物固体实验数据来实现的。通过这种方法，该模型用于演示如何调整库存的渗透率以减少热失控的发生。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2016年第2期|1150-1158|共9页
  • 作者

    R. Aganetti; A. Lamorlette; E. Guilbert; D. Morvan; G.R. Thorpe;

  • 作者单位

    Aix-Marseille Universite CNRS, Centrale Marseille, M2P2 UMR 7340, 13415 Marseille, France,Institute for Sustainability and Innovation, College of Engineering & Science, Victoria University, Melbourne, Vic 8001, Australia;

    Aix-Marseille Universite CNRS, Centrale Marseille, M2P2 UMR 7340, 13415 Marseille, France;

    Aix-Marseille Universite CNRS, Centrale Marseille, M2P2 UMR 7340, 13415 Marseille, France;

    Aix-Marseille Universite CNRS, Centrale Marseille, M2P2 UMR 7340, 13415 Marseille, France;

    Institute for Sustainability and Innovation, College of Engineering & Science, Victoria University, Melbourne, Vic 8001, Australia;

  • 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

    Porous media; Numerical modelling; Biosolids; Self-heating;

    机译：多孔介质数值建模;生物固体自发热;

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