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Multiphase Science and Technology
SJR: 0.124 SNIP: 0.222 CiteScore™: 0.26

ISSN 印刷: 0276-1459
ISSN オンライン: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v24.i1.10
pages 1-45

TWO-FLUID-1D-AVERAGED MODEL EQUATIONS FOR A PIPE UNDERGOING ARBITRARY MOTIONS

Herve Lemonnier
DTN/SE2T/LIEX/ CEA/Grenoble, 38054 Grenoble Cedex 9, France
N. Coutris
Department of Mechanical Engineering, Clemson University, Clemson South Carolina 29634-0921, USA

要約

The WAHA code aims at describing two-phase water hammers in piping systems with emphasis on the calculation of the mechanical loads induced on the pipes. A new two-fluid model is derived which is appropriate for studying the interaction of a deformable pipe with the flow it contains. The equations are provided in two different sets of variables: Eulerian and Lagrangian with respect to the pipe. The new equations are compared to those of the plain two-fluid model for a rectilinear pipe and obviously they do not seem to be of a different nature, though many new terms appear, the significance of which is shortly outlined. The theoretical derivation of these equations is aimed primarily at calculating reaction forces applied on a piping system from the results of one-dimensional thermal-hydraulic code for future inclusion in full form in the WAHA code.

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