Hi'/> The role of explosive boiling in the process of foamed emulsion combustion
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >The role of explosive boiling in the process of foamed emulsion combustion
【24h】

The role of explosive boiling in the process of foamed emulsion combustion

机译：爆炸沸腾在泡沫乳液燃烧过程中的作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Highlights•Explosive boiling could play an important role in the combustion of foamed emulsion.•Intensity of explosive boiling increases together with temperature.•The size of secondary water droplets determines the heat losses.•The size of secondary water droplets decreases with the increase in flame speed.AbstractThe paper analyzes the role of explosive boiling of liquid phase on the process of foamed emulsion combustion. Combustible foamed emulsion represents a multiphase system consisting of oxygen bubbles and hydrocarbon drops dispersed in the water solution of stabilizer. A certain interest to study such systems is determined by the fact, that even at significant water content in the foam it preserves its combustibility. If the temperature in the combustion zone occurs to be higher than a certain critical level, then the defining role in the process of flame propagation will belong to the process of explosive boiling of liquid phase. Herewith the flame speed is determined not by the heat transfer or diffusion of active centers but by the intensity of explosive boiling. On the basis of phenomenological conception the criterion is derived for determination the conditions of explosive boiling of liquid phase of the foam. Foamed emulsion combustion is accompanied by its decay and water drops formation. The dependence of water drops size on the foam composition is obtained with the use of photography of combustion products multiphase flow. It is found out that the flame acceleration due to explosive boiling is accompanied with a decrease in water drops diameter that in turn favors the increase in the intensity of heat losses in the combustion zone and subsequently results in the flame deceleration.
机译： 突出显示 • 爆炸沸腾可能在发泡乳液的燃烧中起重要作用。 • 爆炸沸腾的强度随温度升高而增加。 / ce：para> • 次级水滴的大小决定了热量的损失。 • 次级水滴的大小随火焰的增加而减小速度。 摘要 < ce：simple-para id =“ sp0010” view =“ all”>本文分析了液相爆炸沸腾在发泡乳液燃烧过程中的作用。可燃泡沫乳液代表了一种多相体系，由分散在稳定剂水溶液中的氧气气泡和烃滴组成。对这样的系统的研究有一定的兴趣是基于这样的事实，即即使泡沫中的水含量很高，它也能保持其可燃性。如果燃烧区中的温度高于某个临界水平，则在火焰传播过程中的决定性作用将属于液相的爆炸沸腾过程。因此，火焰速度不取决于活性中心的传热或扩散，而取决于爆炸沸腾的强度。基于现象学的概念，导出了用于确定泡沫的液相爆炸沸腾的条件的标准。泡沫乳液燃烧伴随着其衰减和水滴形成。水滴尺寸对泡沫组合物的依赖性通过使用燃烧产物多相流的照相来获得。研究发现，爆炸沸腾引起的火焰加速伴随着水滴直径的减小，进而有利于增加燃烧区的热损失强度，进而导致火焰减速。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号