Analytical and numerical studies on viscous energy dissipation in laterally driven microcomb structures

doi:10.1016/S0017-9310(02)00337-X

機構典藏 > College of Engineering > Graduate Institute & Department of Aerospace Engineering > Journal Article > Item 987654321/46002

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Title:	Analytical and numerical studies on viscous energy dissipation in laterally driven microcomb structures
Authors:	Chen, Ching-Shung;Chou, Chia-Fen
Contributors:	淡江大學航空太空工程學系
Keywords:	Computer simulation;Damping;Deceleration;Electrodes;Velocity measurement;Microcomb structures;Energy dissipation;Couette flow;damping;flow field;fluid flow;Stokes flow
Date:	2003-02
Issue Date:	2013-03-20 16:19:22 (UTC+8)
Publisher:	Kidlington: Pergamon
Abstract:	Numerical and analytical studies on viscous air damping in laterally oscillating microcomb structures are discussed in this work. Previous investigators modeled this type of flow field using Couette and Stokes flow models. The numerical simulation results demonstrate that the flow is much more complex and quite different from the Couette or Stokes flow. The pumping and sucking motions at the edges of the oscillating electrode create a fluid brake. This fluid brake retards the horizontal movement of the flow and generates a strong vortex in the region between the oscillating electrode and the base material, which has not been reported before. The deceleration of the fluid also increases the velocity gradient on the surfaces of the oscillating electrode, which gives rise to a higher damping. The numerically predicted damping is about 2.8 times larger than that predicted by the Stokes flow model.
Relation:	International Journal of Heat and Mass Transfer 46(4), pp.695-704
DOI:	10.1016/S0017-9310(02)00337-X
Appears in Collections:	[Graduate Institute & Department of Aerospace Engineering] Journal Article

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