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Asai Koji

Affiliate Master Yamaguchi University

Turbulence structure near water surface induced by bubble plume

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 54 Issue 1 Page 1-9
published_at 2003-10
A040054000101.pdf
[fulltext] 165 KB
Title
気泡プルームによって生じる水表面近傍の乱流構造
Turbulence structure near water surface induced by bubble plume
Creators Asai Koji
Creators Tsubogo Koichi
Source Identifiers
Creator Keywords
the gas transfer coefficient water surface bubble plume turbulent flow Eckenfelder's equaqtion
Eckenfelder pointed out that an air-water gas transfer coefficient for air bubbles rising through a column of water was proportional to 2/3 power of water depth. To investigate this mechanism, turbulent flows induced by air bubble plume were measured by using Laser Doppler Velocimeter. The main results obtained in this study are as follows: (1) Both the horizontal and vertical turbulent intensities are nearly constant in the vertical direction in the bubble plume. (2) Both the horizontal and vertical turbulent intensities are enhanced near the water surface out of the bubble plume. (3) The magnitudes of the vertical turbulent intensities near the water surface are proportional to the aeration water surface out of the bubble plume.
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 2003-10
File Version Version of Record
Access Rights open access
Relations
[isVersionOf] [URI]http://memoirs.lib-e.yamaguchi-u.ac.jp/
Schools 工学部