• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >Vortex combustion in a low aspect ratio dump combustor with tapered exit
【24h】

Vortex combustion in a low aspect ratio dump combustor with tapered exit

机译：低锥度倾卸式燃烧器的锥形出口涡流燃烧

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

This paper reports an experimental study of the flow field in a dump combustor that has a low length/ diameter ratio, tapered exit section and the combustor length is lesser than the re-attachment length. The vortex combustion phenomenon in this combustor is evaluated by the cold and hot flow field visualization studies. In the cold flow field position of the vortices and their behavior with time are illustrated. It is observed that two vortices are formed inside the combustor and the second one exhibits a cyclic behavior due to re-circulation and reversal of the flow. The hot flow field and temperature profile normal to the axis of the combustor also support this observation showing similar behavior of the vortex in the combustor. Furthermore, the flow field for reacting flow is seen to closely resemble the cold flow field, suggesting strong influence of vortex dynamics on the combustion process. The results of this study show that sustained combustion can be obtained in a low aspect ratio dump combustor without a swirler due to the flow reversal from the exit section leading to the periodic growth, convection and decay of vortices in the flow field resulting in improved fuel/air mixing.
机译：本文报道了对一个长度/直径比低，出口截面呈锥形且燃烧室长度小于再连接长度的自卸式燃烧室流场的实验研究。通过冷热流场可视化研究评估了该燃烧器中的涡流燃烧现象。在冷流场中，示出了涡旋的位置及其随时间的行为。观察到，在燃烧器内部形成了两个涡流，第二个涡流由于流动的再循环和逆转而表现出周期性的行为。垂直于燃烧室轴线的热流场和温度分布也支持了这一观察结果，显示了燃烧室中涡流的相似行为。此外，可以看出，用于反应流的流场与冷流场非常相似，这表明涡旋动力学对燃烧过程的强烈影响。这项研究的结果表明，由于出口部分的流动逆流导致流场中涡流的周期性增长，对流和衰减，导致燃料得到改善，因此在没有涡流器的低长宽比倾卸式燃烧器中可以获得持续燃烧。 /空气混合。

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