Author(s)

A. Hopf, G. Hailfmger & R. Krieg

Abstract

For fluid-structure interaction problems with complex geometries boundary element methods are quite suitable to describe the transient fluid dynamics. In this paper a triangular boundary element will be introduced to solve such problems. Both the pressure and its normal derivative are distributed linearly over the element. It was possible to carry out the integrations with regular and singular integrands ana- lytically. To demonstrate the method, it has been applied to the blowdown accident of a nuclear reactor. By postulating a sudden break of a pressure vessel nozzle, the incipient coolant flow around the control rods inside the vessel has been investigated. 1 Introduction In safety investigations for chemical and nuc

Keywords