Study on a countermeasure for high level sounds generated from a boiler tube bank duct

• Project/Area Number: 25420199
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Dynamics/Control
• Research Institution: Tokushima Bunri University
• Principal Investigator: Ishihara Kunihiko 徳島文理大学, 保健福祉学部, 教授 (30380108)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 熱交換器 / 空力自励音 / バッフル板 / 穴あき板 / 開口率 / 音響減衰 / 騒音抑制効果 / ボイラ / 気柱共鳴 / 穴開き板 / カルマン渦 / 機械工学 / 機械力学・制御 / 音響情報・制御

Outline of Final Research Achievements

Heat exchangers such as boilers are important equipment in industrial fields. However theses boilers are operated a high level sound is generated and it becomes a cause of complaints from neighbors and a large amount of cost loss. The present study aims to propose a new and reasonable countermeasure and to clarify the usefulness experimentally. As a result, it was clarified that perforated plates with over 1% of aperture ratio can suppress the high level sound effectively and the suppression effects are dependent on aperture ratio and the SPL decreases with increasing the aperture ratio.

Research Products

• [Journal Article] 大音響騒音発生時における管群ダクト内の圧力・流量の挙動について (2014)
  • Author(s): 石原 国彦, 一宮 昌司
  • Journal Title: 日本機械学会論文集 Volume: 80-915 Pages: 1-16
  • NAID: 130005004908
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] 吸音ダクトの音響特性ー種々の簡易予測法の適用性についてー (2014)
  • Author(s): 石原 国彦
  • Journal Title: 日本音響学会 Volume: 70-12 Pages: 658-663
  • NAID: 110009872532
  • Peer Reviewed
• [Journal Article] 吸音材の諸元がダクト内音場の音響減衰に及ぼす影響について (2014)
  • Author(s): 石原 国彦, 塚本 隼也, 一宮 昌司
  • Journal Title: 日本機械学会論文集 Volume: DR0013 Pages: 1-12
  • NAID: 130005004849
  • Peer Reviewed
• [Journal Article] ボイラ・熱交換器で発生する大音響騒音の柔軟壁を利用した対策法に関する研究 (2013)
  • Author(s): 石原 国彦, 高橋武史
  • Journal Title: 機械学会論文集 Volume: 79-802 Pages: 1837-1848
  • NAID: 130003375066
  • Peer Reviewed
• [Journal Article] Study on a Countermeasure of Self-Sustained Tone by a Baffle Plate in Boiler Tube Banks (2013)
  • Author(s): Kunihiko ISHIHARA , Taisuke TAMEHIRA, Masanori TSUJI , Masashi ICHIMIYA
  • Journal Title: Journal of Basic and Applied Phisics Volume: 2 Pages: 143-154
  • Peer Reviewed
• [Journal Article] Study on Acoustic Characteristics of Lined Duct (Comparison between Experiment and BEM analysis using using Impedance of Absorbent measured by Impedance Tube) (2013)
  • Author(s): Kunihiko Ishihara, Masashi Ichimiya
  • Journal Title: Journal of Frontier and Construction Engineering Volume: 2 Pages: 25-33
  • Peer Reviewed
• [Journal Article] Flow noise characterisitics generated from straight duct with some holes (2013)
  • Author(s): Kunihiko Ishihara, Masashi Ichimiya,Tomoji Yoshida
  • Journal Title: Journal of Vehicle Engineering Volume: 2 Pages: 81-89
  • Peer Reviewed
• [Presentation] ボイラ管群ダクトで発生する大音響騒音に対する穴あき板の抑制効果に及ぼす穴径の影響について (2016)
  • Author(s): 石原国彦
  • Organizer: 日本機械学会関西支部第91期総会・講演会
  • Place of Presentation: 大阪電気通信大学
  • Year and Date: 2016-03-11
• [Presentation] ボイラ管群ダクトで発生する大音響騒音に対する空洞部付穴あき板の抑制効果に及ぼす空胴部容積の影響について (2016)
  • Author(s): 石原国彦、青木梨香子
  • Organizer: 日本機械学会中国四国支部第53期総会・講演会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2016-03-09
• [Presentation] ボイラ・熱交換器で発生する大音響騒音の穴あき板を利用した対策法に関する研究 (2015)
  • Author(s): 石原国彦、中岡正典、西岡幹人
  • Organizer: 日本機械学会D&D2015
  • Place of Presentation: 弘前大学
  • Year and Date: 2015-08-25
• [Presentation] Ｓｔｕｄｙ ｏｎ ａ ｃｏｕｎｔｅｒｍｅａｓｕｒｅ ｕｓｉｎｇ ｗａｌｌｓ ｍａｄｅ ｏｆ ｐｅｒｆｏｒａｔｅｄ ｐｌａｔｅ ｆｏｒ ｈｉｇｈ ｌｅｖｅｌ ｓｏｕｎｄ (2015)
  • Author(s): Ｋｕｎｉｈｉｋｏ Ｉｓｈｉｈａｒａ
  • Organizer: ＡＳＭＥ
  • Place of Presentation: Boston in USA
  • Year and Date: 2015-07-19
  • Int'l Joint Research
• [Presentation] ボイラ・熱交換器で発生する大音響騒音に対する穴あき板を用いた対策に関する研究 (2015)
  • Author(s): 石原 国彦
  • Organizer: 日本機械学会中国四国支部第53期総会・講演会
  • Place of Presentation: 近畿大学広島キャンパス
  • Year and Date: 2015-03-06
• [Presentation] Study on modeling of flow induced noise using Lighthill's analogy and Boundary Element Method (2014)
  • Author(s): Masaaki Mori,TakayuｋｉMasumoto, Kunihiko Ishihara, Takuya Oshima,Yosuke Yasuda, Tetsuya Sakuma
  • Organizer: Ｉｎｔｅｒｎｏｉｓｅ２０１４
  • Place of Presentation: メルボルン、オーストラリア
  • Year and Date: 2014-11-16 – 2014-11-19
• [Presentation] 強力吸引車の低騒音化に関する研究（インナーサイレンサ長さが共鳴音に及ぼす影響） (2014)
  • Author(s): 石原国彦、岡村美智也、岩本敏宣、森尾涼
  • Organizer: 日本機械学会年次大会2014
  • Place of Presentation: 東京電機大学
  • Year and Date: 2014-09-08 – 2014-09-10
• [Presentation] 大音響騒音発生時における管群ダクト内の圧力・流量の挙動について (2014)
  • Author(s): 石原国彦、 一宮昌司
  • Organizer: 日本機械学会 Ｄ＆Ｄ2014
  • Place of Presentation: 上智大学
  • Year and Date: 2014-08-26 – 2014-08-29
• [Presentation] 穴あきバッフル板の管群ダクト共鳴音に及ぼす影響 (2014)
  • Author(s): 石原国彦
  • Organizer: 日本機械学会 Ｄ＆Ｄ2014
  • Place of Presentation: 上智大学
  • Year and Date: 2014-08-26 – 2014-08-29
• [Presentation] STUDY ON A COUNTERMEASURE USING FLEXIBLE WALLS FOR HIGH LEVEL SOUND (2014)
  • Author(s): Kunihiko Ishihara
  • Organizer: ASMEPVP2014
  • Place of Presentation: アナハイム、カリフォルニア、ＵＳＡ
  • Year and Date: 2014-07-20 – 2014-07-23
• [Presentation] 強力吸引車の低騒音化に関する研究＊ (2013)
  • Author(s): 岡村美智也、岩本敏宣、森尾涼、石原 国彦
  • Organizer: 日本機械学会年次大会2013（岡山大学）
  • Place of Presentation: 岡山大学
• [Presentation] 弁直下に置かれた温度計保護管の振動 (2013)
  • Author(s): 石原 国彦
  • Organizer: 日本機械学会D&D講演会2013
  • Place of Presentation: 九州産業大学
• [Book] Flow-Induced Vibration (Ｃｌａｓｓｉｆｉｃａｔｉｏｎｓ ａｎｄ ｌｅｓｓｏｎｓ ｆｒｏｍ ｐｒａｃｔｉｃａｌ ｅｘｐｅｒｉｅｎｃｅｓ） (2013)
  • Author(s): Ｋａｎｅｋｏ Ｓｈｉｇｅｈｉｋｏ， Ｉｓｈｉｈａｒａ Ｋｕｎｉｈｉｋｏ ｅｔ．ａｌ
  • Total Pages: 410
  • Publisher: Ｅｌｓｅｖｉｅｒ