CONVERGENCE OF GALERKIN SOLUTIONS USING KARHUNEN-LOEVE EXPANSIONS OF INHOMOGENEOUS 1-D TURBULENCE

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The rate of convergence of the Karhunen-Loeve expansion of an inhomogeneous, instantaneous random field is compared with that of Fourier expansion in relation to the Reynolds number. The model turbulence is generated by solving the Burgers' equation with random forcing. The coefficients of the Fourier expansion are determined by a Galerkin solution scheme. The results show obvious superiority of the Karhunen-Loeve expansion, especially for high Reynolds number flows.
Publisher
AMER INST PHYSICS
Issue Date
1991-03
Language
English
Article Type
Letter
Keywords

COHERENT STRUCTURES; DYNAMICS

Citation

PHYSICS OF FLUIDS A-FLUID DYNAMICS, v.3, no.7, pp.1695 - 1697

ISSN
0899-8213
URI
http://hdl.handle.net/10203/13526
Appears in Collection
ME-Journal Papers(저널논문)
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