The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS
Transactions ID Number: 29-309
Full Name: K.Y. Kung
Position: Professor
Age: ON
Sex: Male
Address: NO.414, Sec.3, Jhongshan E. Rd., Jhongli, TAIWAN
Country: TAIWAN
Tel: 886-3-4361070-6210
Tel prefix: 886
Fax:
E-mail address: ky.kung@msa.hinet.net
Other E-mails: kykoung@nanya.edu.tw
Title of the Paper: Experimental Visualization of gas-assisted injection long bubble in a tube
Authors as they appear in the Paper: Cheng-Hsing Hsu, Kuang-Yuan Kung, Po-Chuang Chen ,and Shu-Yu Hu
Email addresses of all the authors:
Number of paper pages: 10
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 ratio (£f) of the bubble width to the diameter of the circular tube. The theoretical bubble profile is more precise in a lower £f value than in a higher one.
Keywords: Long bubble, Contour equation, Two-phase flow, Correlated number, Optical method
EXTENSION of the file: .pdf
Special (Invited) Session: THE VISUALIZATION OF GAS-ASSISTED INJECTION LONG BUBBLE IN A TUBE
Organizer of the Session: 613-252
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