| Effects of Diffuser Vane Geometry on Interaction Noise Generated from a Centrifugal Compressor |
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| 引用本文： | Yutaka OHTA,Naho TAKEHARA,Yasuhiko OKUTSU,Eisuke OUTA. Effects of Diffuser Vane Geometry on Interaction Noise Generated from a Centrifugal Compressor[J]. 热科学学报(英文版), 2005, 14(4): 321-328. DOI: 10.1007/s11630-005-0052-9 |
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| 作者姓名： | Yutaka OHTA Naho TAKEHARA Yasuhiko OKUTSU Eisuke OUTA |
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| 作者单位： | Department of Mechanical Engineering Waseda University 3-4-1 Okubo Shinjuku，Tokyo 169-8555，Japan，Department of Mechanical Engineering Waseda University 3-4-1 Okubo Shinjuku，Tokyo 169-8555，Japan，Department of Mechanical Engineering Waseda University 3-4-1 Okubo Shinjuku，Tokyo 169-8555，Japan，Department of Mechanical Engineering Waseda University 3-4-1 Okubo Shinjuku，Tokyo 169-8555，Japan |
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| 摘 要： | The characteristics of interaction tone noise radiated from a centrifugal compressor with a vaned diffuser are discussed by experiments, including visualization techniques using the oil-film method. Research attention is paid to the leading edge geometries of the diffuser vanes that are deeply related to the generation mechanism of the interaction tone noise. The compressor-radiated noise can be reduced by several decibels by setting some clearances in both the hub and shroud surfaces of the diffuser wall along with some decline in the pressure-rise coefficient. Since the decline turned out to be caused by the flow impingement and also by the secondary flow within the diffuser passages, several new types of diffuser vane geometries which do not detract from both the performance and noise level are developed and utilized for the experiments. The presented diffuser vane geometries will offer a few basic guidelines for the diffuser vane design.
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| 关 键 词： | 离心压缩机 叶片 扩散体 交感噪音 |
| 收稿时间： | 2005-09-29 |
Effects of diffuser vane geometry on interaction noise generated from a centrifugal compressor |
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| Yutaka Ohta,Naho Takehara,Yasuhiko Okutsu,Eisuke Outa. Effects of diffuser vane geometry on interaction noise generated from a centrifugal compressor[J]. Journal of Thermal Science, 2005, 14(4): 321-328. DOI: 10.1007/s11630-005-0052-9 |
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| Authors: | Yutaka Ohta Naho Takehara Yasuhiko Okutsu Eisuke Outa |
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| Affiliation: | (1) Department of Mechanical Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, 169-8555 Tokyo, Japan |
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| Abstract: | The characteristics of interaction tone noise radiated from a centrifugal compressor with a vaned diffuser are discussed by experiments, including visualization techniques using the oil-film method. Research attention is paid to the leading edge geometries of the diffuser vanes that are deeply related to the generation mechanism of the interaction tone noise. The compressor-radiated noise can be reduced by several decibels by setting some clearances in both the hub and shroud surfaces of the diffuser wall along with some decline in the pressure-rise coefficient. Since the decline turned out to be caused by the flow impingement and also by the secondary flow within the diffuser passages, several new types of diffuser vane geometries which do not detract from both the performance and noise level are developed and utilized for the experiments. The presented diffuser vane geometries will offer a few basic guidelines for the diffuser vane design. |
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| Keywords: | centrifugal compressor vaned diffuser interaction noise noise reduction. |
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