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Plenary Lecture
The Visualization of
Gas-Assisted Injection
Long Bubble in a Tube
Associate Professor Kuang Yuan Kung
Nanya Institute of Technology
Taiwan
E-mail: ky.kung@msa.hinet.net
Abstract:
A long bubble-driven fluid flow in a circular tube is visualized by an
optical method. A pressurized airflow was injected into an 8 mm I.D. and
1,500 mm long horizontally placed glass tube filled with silicon oil to
produce a long bubble in the tube. The images were analyzed by two-value
calculation and a thinning process to extract the contour of the bubble
front. Data points on the contour were then deduced to undergo a regression
curve fitting. The results show a good verification of the theoretically
derived non-dimensional contour equation. The deduced penetration speed
indicates that the speed is increasing downstream due to the decreasing
fluid slug in the tube. The experimental results shows the theoretical
bubble profile can be introduced to the simulation study to reduce the
calculating time. The theoretical bubble profile is more precise in a lower
λ value than in a higher one.
Brief Biography of the Speaker:
Education:
PhD.Chung-Yuan Christian University(Advisor: Professor C.H.Hsu)
M.S.n Mechanical Engineering,Feng Chia University
B.S. in Mechanical Engineering,Chung-Yuan Christian University
Work Experience:
Associate Professor, Nanya Institute of Technology (1999-)
Leader of Department of Mechanical Engineering(1998-2000)
a lecturer , Nanya Institute of Technolog(1989-1998)
Engineer,VISHAY SILICONIX TAIWAN
Engineer, Philips Electronics
Honor:
Session Chair (The 24th national Conference on Mechanical Engineering)
(2007.11.23-24)
Session Chair (The 25th national Conference on Mechanical Engineering)
(2008.11.21-22)
Research Interests:
Heat Transfer
Differential Equation Analysis
Advanced Manufacturing Technology
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