| 蒸汽喷射器噪声的产生与降噪优化设计 |
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| 引用本文： | 冯骥,白英,童淑敏,张俊友.蒸汽喷射器噪声的产生与降噪优化设计[J].内蒙古农业大学学报(自然科学版),2007,28(2):174-176. |
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| 作者姓名： | 冯骥 白英 童淑敏 张俊友 |
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| 作者单位： | 1. 内蒙古农业大学水利与土木建筑工程学院,呼和浩特,010018
2. 内蒙古农业大学机电工程学院,呼和浩特,010018 |
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| 摘 要： | 结合现场噪声测试结果,分析了蒸汽喷射器噪声的特点。对蒸汽喷射器高噪声产生的原因作了理论上的分析,并采用FLUENT-CFD对蒸汽喷射器流场进行模拟。理论分析与模拟结果指出:由于喷嘴出口处轴线上沿轴线方向和垂直于轴线方向存在很大的速度梯度,产生了很强的四极子声源,从而发射很强的噪声。从降低噪声源入手对蒸汽喷射器的结构形式及结构参数进行降噪优化设计,采用FLUENT-CFD对改进后进行蒸汽喷射器模拟,模拟结果表明改进后的蒸汽喷射器较原蒸汽喷射器具有降噪优势,经现场测试,降低噪声14dB。
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| 关 键 词： | 蒸汽喷射器 设计 降噪 |
| 文章编号： | 1009-3575（2007）02-0174-03 |
| 修稿时间： | 2006-07-10 |
INVESTIGATION ON NOISE AND OPTIMUM DESIGN FOR STEAM-JET EJECTOR |
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| FENG Ji,BAI Ying,TONG Shu-ming,ZHANG Jun-you.INVESTIGATION ON NOISE AND OPTIMUM DESIGN FOR STEAM-JET EJECTOR[J].Journal of Inner Mongolia Agricultural University(Natural Science Edition),2007,28(2):174-176. |
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| Authors: | FENG Ji BAI Ying TONG Shu-ming ZHANG Jun-you |
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| Institution: | 1.College of Water Conservancy and Civil Architecture Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China;2.College of Machinery and Electrical Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China |
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| Abstract: | Based on the experiments,the characteristics and mechanism of high noise of the steam-jet ejector were analyzed.A commercial CFD scheme FLUENT was used to simulate the supersonic of steam-jet ejector.Theoretical and numerical results showed that: velocity grad along the axle cause high noise.A perfection design according to FLUENT CFD simulating was done in order to reduce the noise of sound source.The noise was reduced by 14dB in testing site. |
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| Keywords: | FLUENT-CFD |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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