• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>ASME turbo expo >LAMINAR FLAME SPEED MEASUREMENTS AND MODELING OF ALKANE BLENDS AT ELEVATED PRESSURES WITH VARIOUS DILUENTS
【24h】

LAMINAR FLAME SPEED MEASUREMENTS AND MODELING OF ALKANE BLENDS AT ELEVATED PRESSURES WITH VARIOUS DILUENTS

机译：各种稀释剂在升高压力下层流火焰速度的测量和烷烃共混物的建模

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Laminar flame speeds at elevated pressure for methane-based fuel blends are important for refining the chemical kinetics that are relevant at engine conditions. The present paper builds on earlier measurements and modeling by the authors by extending the validity of a chemical kinetics mechanism to laminar flame speed measurements obtained in mixtures containing significant levels of helium. Such mixtures increase the stability of the experimental flames at elevated pressures and extend the range of laminar flame speeds. Two experimental techniques were utilized, namely a Bunsen burner method and an expanding spherical flame method. Pressures up to 10 arm were studied, and the mixtures ranged from pure methane to binary blends of CH_4/C_2H_6 and CH_4/C_3H_8. In the Bunsen flames, the data include elevated initial temperatures up to 650 K. There is generally good agreement between model and experiment, although some discrepancies still exist with respect to equivalence ratio for certain cases. A significant result of the present study is that the effect of mixture composition on flame speed is well captured by the mechanism over the extreme ranges of initial pressure and temperature covered herein. Similarly, the mechanism does an excellent job at modeling the effect of initial temperature for methane-based mixtures up to at least 650 K.
机译：甲烷基燃料混合物在高压下的层流火焰速度对于改善与发动机状况相关的化学动力学非常重要。本文建立在作者较早的测量和建模的基础上，将化学动力学机制的有效性扩展到了在含大量氦气的混合物中获得的层流火焰速度测量结果。这样的混合物增加了在升高的压力下实验火焰的稳定性，并扩展了层流火焰速度的范围。利用了两种实验技术，即本生灯法和膨胀球形火焰法。研究了高达10臂的压力，混合物的范围从纯甲烷到CH_4 / C_2H_6和CH_4 / C_3H_8的二元共混物。在本生火焰中，数据包括高达650 K的升高的初始温度。尽管在某些情况下，当量比仍然存在一些差异，但是模型与实验之间通常有很好的一致性。本研究的重要结果是，在本文所述的初始压力和温度的极端范围内，该机理很好地捕获了混合物组成对火焰速度的影响。同样，该机制在建模初始温度对至少650 K的甲烷基混合物的影响方面也发挥了出色的作用。

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