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End Effects for Stokes Flow in Rectangular Cavity in Hamiltonian System
Author(s): HE Shi-hua, ZHANG Li-xiang, HU Ji-min, ZOU Jin
Pages: 95-
101
Year: 2013
Issue:
4
Journal: Journal of Kunming University of Science and Technology(Science and Technology)
Keyword: Hamiltonian system; Stokes flow; rectangular cavity; end effect;
Abstract: 对哈密顿体系下求解矩形域Stokes流的端部效应进行了研究.建立了Stokes流哈密顿对偶方程,获得了反对称问题的非零本征值及其本征解.将对偶方程的解由非零本征值本征解展开,在由端部边界条件导出展开式求解系数的基础上,计算分析了端部效应的衰减规律及其相互作用机理,全面考察了端部边界的误差大小.端部切向驱动所导致的矩形域内流动速度的变化呈逐步衰减趋势;展开式叠加项数越多,满足速度边界的精度越高;深宽比越小,上、下端部的互相干扰越大,端部速度误差也越大;同向驱动时的端部误差大于反向驱动时的误差.
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