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URN: urn:nbn:de:swb:90-470190

Development and Application of a Model for the Cross-Flow Induced by Mixing Vane Spacers in Fuel Assemblies

Zimmermann, Markus

Abstract:
CFD investigations of the flow in a 5x5 rod bundle with mixing vane spacer grid were performed with single-phase and two-phase flow conditions. A non-linear k-epsilon model was used to simulate secondary flow and non-isotropic turbulence. A detailed analysis of the results showed that mixing vane induced swirling flow strongly affects the cross-flow. A model was developed to predict the forced cross-flow between the sub-channels and implemented into the sub-channel analysis code COBRA-FLX.


Zugehörige Institution(en) am KIT Institut für Fusionstechnologie und Reaktortechnik (IFRT)
Publikationstyp Hochschulschrift
Jahr 2015
Sprache Englisch
Identifikator KITopen ID: 1000047019
Verlag Karlsruhe
Abschlussart Dissertation
Fakultät Fakultät für Maschinenbau (MACH)
Institut Institut für Fusionstechnologie und Reaktortechnik (IFRT)
Prüfungsdaten 13.02.2015
Referent/Betreuer X. Cheng
Schlagworte Fuel Assembly, CFD, Flow Sweeping, Sub-channel analysis, mixing vane spacer
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