Numerical simulation of hydraulic transients: Dissertation

Timo Siikonen

Research output: ThesisDissertationCollection of Articles


A numerical method suitable for the analysis of hydraulic transients in one-dimensional pipelines as well as some applications of the method are presented in this thesis. In the present method one-dimensional flow equations are solved in a characteristic form using a finite difference technique. A non-equilibrium two-phase flow model is used, which makes it possible to analyze the effect of vaporization. The motion of the pipe-wall, which is important in some types of hydraulic transients, can be taken into account approximately. The main application of the method has been the piping of nuclear reactors.
Original languageEnglish
QualificationDoctor Degree
Awarding Institution
  • Helsinki University of Technology
Place of PublicationHelsinki
Publication statusPublished - 1985
MoE publication typeG5 Doctoral dissertation (article)


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