音波照射による閉端円管からの気体排出促進

• 古谷 勇貴

  静岡大学大学院総合科学技術研究科工学専攻

• 水嶋 祐基

  静岡大学学術院工学領域

• 渡部 正夫

  北海道大学大学院工学院　機械宇宙工学専攻

• 真田 俊之

  静岡大学学術院工学領域

書誌事項

タイトル別名

• Enhancement of Gas Discharge from a Closed End Hole by Using Acoustic Wave Irradiation
• オンパ ショウシャ ニ ヨル ヘイタンエンカン カラ ノ キタイ ハイシュツ ソクシン

抄録

Filling holes with liquid, or discharging gas from holes, is a fundamental process in both cleaning and painting. Discharging gas from small holes with closed end and high aspect ratio is extremely difficult due to surface tension. In this study, we developed a new gas discharge process from a hole by using acoustic wave irradiation. We irradiated two types of acoustic waves: waves with constant frequencies and those with variable frequencies in time i.e. sweep wave for test samples in a water pool. In addition, we observed gas discharge using high-speed video camera. As a result, we succeeded in completely discharging gas by using sweep frequency of the acoustic waves. From the observation results, we confirmed that gas discharge consists of three stages. The gas was discharged from the hole mainly at the first and third stage. In these stages, the natural frequency of the gas column in the hole was essential. In the second stage, the gas column in the hole breaks into multiple gas columns; then, the gas was hardly discharged even with the acoustic wave irradiation.

収録刊行物

• 混相流

  混相流 34 (1), 111-117, 2020-03-15

  日本混相流学会

キーワード

• Gas discharging
• Small holes
• Acoustic wave
• Natural frequency
• Bubble

詳細情報

• CRID: 1390002184891695872
• NII論文ID: 130007827290
• NII書誌ID: AN10088286
• DOI: 10.3811/jjmf.2020.010
• ISSN: 18815790
• ISSN: 09142843
• NDL書誌ID: 030319785
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030319785
• Web Site: https://www.jstage.jst.go.jp/article/jjmf/34/1/34_2020.010/_pdf
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可