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Title:Fall Velocity of Rigid Sphere in Asymmetrically Oscillating Fluid
Author(s):Chang, Tsang-Jung
Doctoral Committee Chair(s):Ben Chie Yen
Department / Program:Civil Engineering
Discipline:Civil Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Civil
Abstract:Suspended sediment, occurring generally in the earth's water and air environment, is important to land-form development and water and air pollution control. A basic question on sediment suspension in nature fluid body is why the sediment particles do not settle down even though they are heavier than the surrounding fluid. Among the different plausible suggestions, one possible explanation is that flow oscillation provides a mechanism to keep the sediment particle in suspension. An analytic-numeric study has been carried out to investigate the settling behavior of a rigid homogeneous sphere in a vertically oscillating fluid, particularly to identify the oscillation-induced levitation condition at which a particle responds to the vertically oscillating fluid so that the net gravity force is completely neutralized and the particle merely oscillates about a fixed level. Applicability of the analytic-numeric study is tested by using experimental data obtained in the present research as well as by other previous researches.
Issue Date:1997
Description:152 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997.
Other Identifier(s):(MiAaPQ)AAI9737069
Date Available in IDEALS:2015-09-25
Date Deposited:1997

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