Development and Application of a Model for the Cross-Flow Induced by Mixing Vane Spacers in Fuel Assemblies
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 | Fakultät für Maschinenbau – Institut für Fusionstechnologie und Reaktortechnik (IFRT) |
| Publikationstyp | Hochschulschrift |
| Publikationsjahr | 2015 |
| Sprache | Englisch |
| Identifikator | urn:nbn:de:swb:90-470190 KITopen-ID: 1000047019 |
| Verlag | Karlsruher Institut für Technologie (KIT) |
| Art der Arbeit | Dissertation |
| Fakultät | Fakultät für Maschinenbau (MACH) |
| Institut | Fakultät für Maschinenbau – Institut für Fusionstechnologie und Reaktortechnik (IFRT) |
| Prüfungsdaten | 13.02.2015 |
| Schlagwörter | Fuel Assembly, CFD, Flow Sweeping, Sub-channel analysis, mixing vane spacer |
| Referent/Betreuer | Cheng, X. |