...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Combustion Science and Technology >Indirect Combustion Noise Contributions in a Gas Turbine Model Combustor with a Choked Nozzle
【24h】

Indirect Combustion Noise Contributions in a Gas Turbine Model Combustor with a Choked Nozzle

机译：带有节流喷嘴的燃气轮机模型燃烧器中的间接燃烧噪声贡献

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

Direct and indirect combustion noise sources co-exist in combustors. Direct noise results from unsteady combustion. Indirect contributions are associated to entropy fluctuations convected through flow accelerating devices, such as a nozzle. Many analytical and numerical studies on combustion noises have been achieved since the late 1970s yet few experimental studies were carried out to discriminate direct from indirect contributions. An experimental method to compute direct and indirect nozzle transfer functions separately has been developed in our previous work (Tao et al., 2013). It consists of measuring the direct and indirect noise transfer functions through simultaneous pressure and temperature fluctuation measurements. The method has already been validated in a well-controlled test bench, which generates temperature and acoustic fluctuations without the complexity of combustion. This article discusses the application of the methodology in a pressurized burner based on simulations of acoustic and entropy fluctuations in the combustion chamber.
机译：直接和间接燃烧噪声源共存于燃烧室中。不稳定的燃烧导致直接噪音。间接贡献与通过诸如喷嘴之类的流动加速装置对流的熵波动有关。自1970年代后期以来，已经完成了许多关于燃烧噪声的分析和数值研究，但很少进行实验研究来将直接贡献与间接贡献区分开。在我们之前的工作中，已经开发出了一种分别计算直接和间接喷嘴传递函数的实验方法（Tao等人，2013）。它包括通过同时进行压力和温度波动测量来测量直接和间接噪声传递函数。该方法已经在一个控制良好的测试台上得到了验证，该测试台可产生温度和声波波动，且燃烧不复杂。本文基于模拟燃烧室中的声学和熵涨落，讨论了该方法在加压燃烧器中的应用。

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