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Visualization of Bubble‐Fluid Interaction by a Moving Object Flow Image Analyzer System
Author(s) -
CHOI H. M.,
TERAUCHI T.,
MONJI H.,
MATSUI G.
Publication year - 2002
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2002.tb04578.x
Subject(s) - bubble , particle image velocimetry , flow visualization , wake , spectrum analyzer , position (finance) , velocimetry , flow (mathematics) , visualization , measure (data warehouse) , mechanics , physics , optics , acoustics , computer science , artificial intelligence , turbulence , finance , database , economics
A bstract : This paper deals with interaction between a bubble and fluid around it, visualized by a moving object flow image analyzer (MOFIA) consisting of a three‐dimensional (3D) moving object image analyzer (MOIA) and two‐dimensional particle image velocimetry (PIV). The experiments were carried out for rising bubbles of various sizes and shapes in stagnant water in a vertical pipe. In the MOFIA employed, 3D‐MOIA was used to measure bubble motion and PIV to measure fluid flow. The 3D position and shape of a bubble and the velocity field were measured simultaneously. The experimental results showed that the interaction was characterized by the shape, size and density of a bubble. Concretely, they showed the characteristics of bubble motion, wake shedding, and flow field.