Measurement of local void fraction of bubbly flows generated by breaking waves

Ching Jer Huang, Yann Tesrn Lin, Tsung Mo Tien

研究成果: Conference contribution

摘要

This work presents a novel fiber-optic sensing system to measure the local air-volume (void) fraction of bubbly flows caused by breaking waves near a submerged breakwater. Initially, a sensing system with a single fiber-optic probe is developed to detect the local void fractions of bubbly flows. The rating curve between the time fraction ratio of the bubble signal and the void fraction is then established by performing calibration experiments in a cylindrical tank. The high correlation coefficient between the time fraction ratio and the void fraction suggests that the proposed fiber-optic sensing system can measure local void fractions in the range of 1 % to 16 %. Additionally, based on the proposed system the bubbly flows near a submerged breakwater caused by breaking waves are investigated. Effects of different variables on the distribution of void fraction at the lee side of breakwater are systematically studied. These variables include the incident wave height, period and width of the breakwater.

原文English
主出版物標題Proceedings of the 22nd (2012) International Offshore and Polar Engineering Conference
頁面1218-1222
頁數5
出版狀態Published - 2012 9月 17
事件22nd International Offshore and Polar Engineering Conference, ISOPE-2012 - Rhodes, Greece
持續時間: 2012 6月 172012 6月 22

出版系列

名字Proceedings of the International Offshore and Polar Engineering Conference
ISSN(列印)1098-6189
ISSN(電子)1555-1792

Other

Other22nd International Offshore and Polar Engineering Conference, ISOPE-2012
國家/地區Greece
城市Rhodes
期間12-06-1712-06-22

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 海洋工程
  • 機械工業

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