不同构型3D打印多喷嘴的声学性能研究

IF 0.9 Q4 ACOUSTICS
A. Variani, Ali Dastamoz, S. Zare, A. Nikpey, Saeid Ahmadi
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引用次数: 0

摘要

本文研究了不同几何形状、不同出口数量和不同材料的多喷嘴对降低射流辐射噪声的影响。喷嘴分为两组,出口数量少和多,每个出口形状不同,有槽形、圆形和几何形状。首先,设计喷嘴,然后由3D打印机Form Labs, Form2USA用聚合物树脂制造。同时,喷嘴采用不锈钢制成,降噪效果最好。噪声和空气推力分别在3、5、7 BAR三个气压计和喷管顶点30°、90°、135°方向上进行测量。在出口数量较少的喷嘴中,塑料和不锈钢槽型喷嘴的降噪效果最好,分别接近11-14 dB(A)和11.5-15 dB(A)。狭缝喷嘴比翅片喷嘴平均降噪近5-6 dB(A)。然而,与出口数量较少的喷嘴相比,出口数量较多的喷嘴(鳍状出口和鳍状中心出口)的噪声降低幅度要大得多,大约为16-18 dB(A),它们代表的声音相似。所有测试的喷嘴和开口管在每个压力表处都显示出相等的空气推力。与其他出口数量较少的配置相比,塑料或不锈钢开槽出口形状的喷嘴可以提供合理的降噪。相比之下,出口数量更多的喷嘴显示出最大的降噪效果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Acoustic Performance of 3D Printed Multiple Jet Nozzles with Different Configurations
This work investigated multiple jet nozzles with various geometrical shape, number of exits, and material on reducing noise radiated from jet flows. Nozzles are categorized in two groups with few and many exit numbers, each with various exit shapes, slot and circular, and geometry. Firstly, nozzles are designed and then fabricated by a 3D printer, Form Labs, Form2USA, with polymeric resin. Also, the nozzle with the most noise reduction made of stainless steel. Noise and air thrust were measured at three air pressure gauges, 3, 5, 7 BAR and directions from nozzle apex, 30°, 90°, 135°. Nozzles with slot exit shape made of both plastic and stainless steel revealed the most noise reduction among all nozzles with few exit numbers, nearly 11–14 dB(A) and 11.5–15 dB(A), respectively. On average, slotted nozzle noise reduction was nearly 5–6 dB(A) more than finned nozzle. However, nozzles with more exit numbers, finned and finned-central exit, illustrated much more noise reduction than nozzles with few exit numbers, by almost 16–18 dB(A), they represented similar sound. All tested nozzles and open pipe demonstrated equal air thrust at each pressure gauges. The nozzles with slotted exit shape, either plastic or stainless steel, can provide reasonable noise reduction in comparison to other configuration with few exit numbers. In contrast, nozzles with more exit numbers demonstrated the most noise reduction.
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来源期刊
Sound and Vibration
Sound and Vibration 物理-工程:机械
CiteScore
1.50
自引率
33.30%
发文量
33
审稿时长
>12 weeks
期刊介绍: Sound & Vibration is a journal intended for individuals with broad-based interests in noise and vibration, dynamic measurements, structural analysis, computer-aided engineering, machinery reliability, and dynamic testing. The journal strives to publish referred papers reflecting the interests of research and practical engineering on any aspects of sound and vibration. Of particular interest are papers that report analytical, numerical and experimental methods of more relevance to practical applications. Papers are sought that contribute to the following general topics: -broad-based interests in noise and vibration- dynamic measurements- structural analysis- computer-aided engineering- machinery reliability- dynamic testing
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