Journal
NUCLEAR ENGINEERING AND DESIGN
Volume 365, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.nucengdes.2020.110734
Keywords
Variable cross-section; Compressible two-phase flows; Finite volume; Pipe network; Junction; Abrupt change of area
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This work is devoted to the simulation of single- and two-phase shock-tubes. In particular, the interaction between pressure waves and an abrupt change of area (sudden expansion and sudden contraction) is also considered. For this purpose, the quasi 1-D Finite-Volume approach recently developed by the authors for compressible flows in pipelines is used and assessed on a variety of test-cases. The numerical solutions are compared with other numerical solutions obtained with codes as RELAP-5, WAHA or RELAP-7 or analytical solutions when available. Finally, the experimental pressure waves propagation in a network experiments is also considered. The carefully chosen test-cases assess the ability of the present approach to predict the complex dynamics of single-and two-phase pressure wave phenomena with satisfactory accuracy and efficiency.
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