WIT Press


Comparison Between Fourier And Proper Orthogonal Decomposition Of A Velocity Field Within A Connective Vessel

Price

Free (open access)

Paper DOI

10.2495/CMEM970311

Volume

17

Pages

11

Published

1997

Size

995 kb

Author(s)

A. Cenedese, M. Miozzi & G. Querzoli

Abstract

The convective flow generated in a rectangular vessel by a linear source has been studied by means of two spectral decompositions: Proper Orthogonal Decomposition and Fourier Decomposition. The velocity field was measured by Particle Tracking Velocimetry, an optical techniques that furnishes the time evolution of the velocity vectors on a regularly spaced grid. The former decomposition is based on the computation of an empirical orthonormal basis from the given data set whereas the latter uses the discretisation of a set of harmonic functions. The effectiveness of the methods, for the present data-set, was compared and their field of

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