TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Fluid Transmission Line Modeling Using a Variational Method

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut153-162
Sivumäärä10
JulkaisuJournal of Dynamic Systems, Measurement and Control: Transactions of the ASME
Vuosikerta122
Numero1
TilaJulkaistu - maaliskuuta 2000
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

A variational method is used to derive numerical models for transient flow simulation in fluid transmission lines. These are generalizations of models derived using the more traditional modal method. Three different transient compressible laminar pipe flow models are considered (inviscous, one-dimensional linear viscous, and two-dimensional dissipative viscous flow), and a model for transient turbulent pipe flow is given. The (model) equations in the laminar case are given in the form of a set of constant coefficient ordinary differential equations, and for the turbulent case (model) in the form of a set of nonlinear ordinary differential equations. Explicit equations are given for various end conditions. Attenuation factors, similar to the window functions used in spectral analysis, are used to attenuate Gibbs phenomenon oscillations.

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