Effect of wall temperature and random distribution of micro organic dust particles on their combustion parameters

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• 作者：M. Bidabadi ; E. Yaghoubi ; M. Harati ; Gh. Shahryari…
• 关键词：random combustion ; recirculation ; micro organic particle ; effective equivalence ratio ; flame temperature ; burning velocity
• 刊名：Journal of Central South University
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：22
• 期：10
• 页码：3888-3899
• 全文大小：1,637 KB
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• 作者单位：M. Bidabadi (1)
  E. Yaghoubi (1)
  M. Harati (1)
  Gh. Shahryari (1)
  B. Akhoondian (1)
  
  1. Department of Mechanical Engineering, Iran University of Science and Technology, Combustion Research Laboratory, Narmak, Tehran, Iran
  
• 刊物类别：Engineering
• 刊物主题：Engineering, general
  Metallic Materials
  Chinese Library of Science
  
• 出版者：Central South University, co-published with Springer
• ISSN：2227-5223

文摘

The effect of wall temperature on the characteristics of random combustion of micro organic particles with recirculation was investigated. The effect of recirculating in micro-combustors is noticeable, hence it is necessary to present a model to describe the combustion process in these technologies. Recirculation phenomenon is evaluated by entering the exhausted heat from the post flam zone into the preheat zone. In this work, for modeling of random situation at the flame front, the source term in the equation of energy was modeled considering random situation for volatizing of particles in preheat zone. The comparison of obtained results from the proposed model by experimental data regards that the random model has a better agreement with experimental data than non-random model. Also, according to the results obtained by this model, wall temperature affects the amount of heat recirculation directly and higher values of wall temperature will lead to higher amounts of burning velocity and flame temperature. Keywords random combustion recirculation micro organic particle effective equivalence ratio flame temperature burning velocity