A Prediction on Specific Noise Based on Internal Flow of a Forward Curved Fan

• SASAKI Souichi

  長崎大学 工学部

• KODAMA Yoshio

  長崎大学 工学部

• HAYASHI Hidechito

  長崎大学 工学部

• HATAKEYAMA Makoto

  東陶機器（株）　総合研究所

Bibliographic Information

Other Title

• 多翼ファンの内部流動に基づく比騒音の予測
• タヨク ファン ノ ナイブ リュウドウ ニ モトズク ヒ ソウオン ノ ヨソク

Abstract

Specific noise which consists of total pressure and fan noise is available to estimate the overall performance. In this study, a prediction theory of specific noise for a forward curved fan is proposed. The specific noises of the fans that have a different number of blades were discussed based on this theory. The predicted total pressure coefficient coincided well with the experiment. The fan noise of MF120 fan (120 blades) became 3.9dB smaller than MF40 fan (40 blades) because the relative velocity was reduced by the slip. It could be predicted quantitatively that the specific noise of MF120 fan was 2.4 dB lower than MF40 fan.

Journal

• Turbomachinery

  Turbomachinery 35 (4), 229-236, 2007

  Turbomachinery Society of Japan

Keywords

• Fan
• Design
• Flow Phenomenon
• Performance
• Noise

Details

• CRID: 1390282679521432832
• NII Article ID: 10018918565
• NII Book ID: AN00004836
• DOI: 10.11458/tsj.35.229
• ISSN: 18802338
• ISSN: 03858839
• HANDLE: 10069/20088
• NDL BIB ID: 8757437
• Web Site: https://nagasaki-u.repo.nii.ac.jp/records/18269
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8757437
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed