Pressure Fluctuation Associated with Bubble Motion in Microbubble Emission Boiling from a Vertical Surface

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概要

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• High heat flux far exceeding CHF in microbubble emission boiling (MEB) should be considered a result of violent growing and collapsing behavior of coalescent bubbles in that regime, which introduces subcooled liquid to the surface to make steady solid-liquid contact even in the high surface temperature region. This bubble behavior generates a moment of high pressure in the vicinity of the surface. In this study, a measurement of the pressure fluctuation in the liquid near the surface was performed synchronously with a recording of the bubble motion by a high speed video camera. The experimental results reveal that the peak value of the pressure fluctuation corresponds to the bubble collapse. The image processing method was also applied to the video pictures to analyze the bubble motion and some information was obtained.

• 一般社団法人日本機械学会の論文
• 2000-05-15

著者

• Shimada Ryohachi

  Faculty Of Scinece And Engineering Ishinomaki Senshu University

• Kumagai Satoshi

  Graduate School Of Engineering Tohoku University

• KAWABATA Kazunori

  Graduate School of Engineering, Tohoku University

• YOSHIKAWA Hiroyuki

  Graduate School of Engineering, Tohoku University

• Kawabata Kazunori

  Graduate School Of Engineering Tohoku University

• Yoshikawa Hiroyuki

  Graduate School Of Engineering Tohoku University

• SHIMADA Ryohachi

  Faculty of Engineering, Tohoku University

関連論文

• Microbubble Emission Boiling on a Horizontal Upward-Facing Rectangular Surface in Subcooled Flow : Heat Transfer, Power, Combustion, Thermophysical Properties
• Pressure Fluctuation Associated with Bubble Motion in Microbubble Emission Boiling from a Vertical Surface

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