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首页> 外文期刊>Combustion and Flame >Analysis of the influence of cold front quenching on the turbulent burning velocity associated with an eddy-break-up model
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Analysis of the influence of cold front quenching on the turbulent burning velocity associated with an eddy-break-up model

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摘要

A combination of numerical and asymptotic methods was used to study how burning velocities associated with the use of an eddy-break-up-like model are affected by the presence of quenching. Quenching was introduced by setting the mean reaction rate to zero as soon as the progress variable representative of the combustion process was below some quenching value. The geometry of a one-dimensional premixed flame that propagates in a constant turbulence field was considered. The burning velocity, an eigenvalue of the problem as soon as quenching is present, is a decreasing function of the quenching value. When the quenching value tends to zero, the burning velocity and the mean structure of the reacting zone tend to the value and structure predicted by the Kolmogorov-Petrovskii-Piskunov theory. The convergence rate towards this limit is extremely slow. This indicates that, in practical calculations using an eddy-break-up-like model, the propagation characteristics of the calculated mean reacting zones can be significantly affected by the accuracy of the numerical scheme, as well as by the treatment of the boundary conditions. (C) 1998 by The Combustion Institute. References: 8

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  • 来源
    《Combustion and Flame》 |1998年第4期|492-497|共6页
  • 作者

    Sabelnikov VA.; Bruel P.; Corvellec C.;

  • 作者单位

    ENSMA, Lab Combust & Deton, CNRS, UPR 9028, BP 109, F-86960 Futuroscope, France.;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 燃料与燃烧;
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