高強度集束音場中での気泡核の成長と安定性に関する解析

• 眞海 勇輝

  大阪府立大学大学院工学研究科

• 石田 将真

  大阪府立大学大学院工学研究科

• 小笠原 紀行

  大阪府立大学大学院工学研究科

• 高比良 裕之

  大阪府立大学大学院工学研究科

書誌事項

タイトル別名

• Analysis for the Growth and Stability of Bubble Nuclei in High-Intensity Focused Ultrasound Fields
• コウキョウド シュウソクオンジョウ チュウ デ ノ キホウカク ノ セイチョウ ト アンテイセイ ニ カンスル カイセキ

抄録

The growth of bubble nuclei in high intensity focused ultrasound (HIFU) is investigated. The imposed pressure on the nuclei is given by the experiments for the backscattering of HIFU from a laser-induced bubble interface. The lower limit of initial radius, R_0min over which the bubble grows explosively, is calculated using the dynamical equation of motion for a spherical bubble in which the liquid compressibility and the thermal diffusion through the bubble interface are taken into consideration. The relationship between R_0min and the absolute value of the minimum of imposed pressure |P_min | is obtained for various temperature ranges. It is shown that temperature dependency of |P_min | is in good agreement with that obtained directly from the corresponding experiments. It is also shown that appropriate choice of physical properties makes it possible to predict the relationship between R_0min and |P_min | in a temperature range from that in different temperature ranges even though the imposed pressure on the nuclei is different with each other. The results also show that temperature dependency of surface tension is a key factor to determine R_0min.

収録刊行物

• 混相流

  混相流 35 (1), 28-35, 2021-03-15

  日本混相流学会

キーワード

• Cavitation
• Bubble nuclei
• Inception
• High intensity focused ultrasound

詳細情報

• CRID: 1390287696160419584
• NII論文ID: 130008024960
• NII書誌ID: AN10088286
• DOI: 10.3811/jjmf.2021.006
• ISSN: 18815790
• ISSN: 09142843
• NDL書誌ID: 031353146
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031353146
• Web Site: https://www.jstage.jst.go.jp/article/jjmf/35/1/35_2021.006/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可