首页> 外文期刊>MATEC Web of Conferences >Study of Flow Induced Noise in Vertical Inline Pump Using Lighthill Analogy
【24h】

Study of Flow Induced Noise in Vertical Inline Pump Using Lighthill Analogy

机译:灯灰类比垂直内联泵流量诱导噪声研究

获取原文
       

摘要

The pump user demands for specification along with noise and vibration magnitude for extreme operating conditions apart from best efficiency flow. In order to predict the noise level in pumps, the entire unit of pump has to be considered for acoustic evaluation. Hence, the full three dimensional model of vertical inline pump which consists of inlet pipe, impeller, and volute casing is considered for detailing the flow induced noise using Lighthill analogy. The performance characteristics of pump are well matched between experimental and computational results and the overall sound power level at best efficiency flow using computation was compared with empirical relations and found to be agreed well. The streamline patterns along the inlet pipe shows the effects of recirculation and return flow at partload condition and confirm that the utilization of flow passage is not well streamlined even for nominal flow rate. Further, the detailed study of inlet pipe cross sections reveals the nature of different noise sources such as dipole and quadrupole sound levels along with Proudman source power level. The intensity of turbulence and vortices in flow passage is predicted well using quadrupole source and Proudman sound power levels.
机译:除了最佳效率流动之外,泵用户对噪音和振动幅度的要求以及极端操作条件的要求。为了预测泵中的噪声水平,必须考虑整个泵单元进行声学评估。因此,考虑了由入口管,叶轮和蜗壳壳体组成的垂直内联泵的全三维模型,用于详细说明使用Lighthill类比的流动诱导噪声。泵的性能特征在实验和计算结果之间匹配良好匹配,并将使用计算的最佳效率流量的整体声功率水平与实证关系进行比较,发现很好地商定。沿着入口管的流线图案显示了再循环条件的效果,并确认流动通道的利用率均匀地流动均匀流动,甚至用于标称流速。此外,入口管道横截面的详细研究揭示了不同噪声源的性质,例如偶极和四极声声级以及雄源功率电平。使用四极源和猎手声功率水平预测流动通道中湍流和涡流的强度。

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