Abstract
This paper is concerned with the modelling of the damage induced by pressure transients in liquid-filled pipes at high temperatures. The fluid dynamics and pipewall deformation are modelled by the classical water hammer theory, whereas pipewall mechanical behavior is described by an internal variable constitute theory. The resulting nonlinear system of hyperbolic equations is solved by means of a numerical technique based on Glimm's method. Numerical examples concerning the damage evolution induced by pressure transients are presented and analyzed to demonstrate the applicability of the theory.
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