SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (1): 25-30.DOI: 10.1016/S1004-9541(13)60437-1

• 流体力学与传递现象 • 上一篇    下一篇

Effects of Gas Temperature Fluctuation on the Soot Formation Reactions

陈莹, 张健   

  1. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
  • 收稿日期:2011-08-24 修回日期:2012-07-12 出版日期:2013-02-28 发布日期:2013-02-04
  • 通讯作者: ZHANG Jian
  • 基金资助:

    Supported jointly by the National Natural Science Foundation of China (51076082) and the State Key Laboratory of Engines (SKLE200902).

Effects of Gas Temperature Fluctuation on the Soot Formation Reactions

CHEN Ying, ZHANG Jian   

  1. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
  • Received:2011-08-24 Revised:2012-07-12 Online:2013-02-28 Published:2013-02-04
  • Supported by:

    Supported jointly by the National Natural Science Foundation of China (51076082) and the State Key Laboratory of Engines (SKLE200902).

摘要: The effects of gas temperature fluctuations on soot formation and oxidation reactions are investigated numerically in a reacting flow. The instantaneous variations of soot mass fraction with time are obtained under the time-averaged gas temperature of 1500-1700 K. The simulation results show that the gas temperature fluctuation has obvious influence on the instantaneous processes of soot formation and oxidation. Within the present range of gas temperature, the gas temperature fluctuation results in generally lower soot mass fraction comparing to that without gas temperature fluctuation. The increase in the fluctuation amplitude of gas temperature leads to decrease in time-averaged soot mass fraction and increase in time-averaged soot particle number density.

关键词: gas temperature fluctuation, soot formation, reacting flow, numerical simulation

Abstract: The effects of gas temperature fluctuations on soot formation and oxidation reactions are investigated numerically in a reacting flow. The instantaneous variations of soot mass fraction with time are obtained under the time-averaged gas temperature of 1500-1700 K. The simulation results show that the gas temperature fluctuation has obvious influence on the instantaneous processes of soot formation and oxidation. Within the present range of gas temperature, the gas temperature fluctuation results in generally lower soot mass fraction comparing to that without gas temperature fluctuation. The increase in the fluctuation amplitude of gas temperature leads to decrease in time-averaged soot mass fraction and increase in time-averaged soot particle number density.

Key words: gas temperature fluctuation, soot formation, reacting flow, numerical simulation