DEVELOPMENT OF A HEAT TRANSFER CORRELATION FOR THE HPLWR FUEL ASSEMBLY BY MEANS OF CFD ANALYSIS
2011 (English)In: Proceedings of the 5th International Symposium on Supercritical Water-Cooled Reactors, 2011Conference paper (Refereed)
The High Performance Light Water Reactor (HPLWR) has been under development in the HPLWR phase-2 project funded by the European Union. The HPLWR project started September 2006 and ended February 2010. Work package 5 within this project involves the improved understanding of heat transfer, CFD model development and validation, and the prediction of the heat transfer rate in a HPLWR fuel assembly. USTUTT, KTH, NRG andFZK contributed to this work package. The overall objective of work package 5 was the development of a heat transfer correlation for the prediction of the heat transfer rate in the HPLWR fuel assembly by means of CFD analyses. In the HPLWR fuel assembly, a helical wire has been selected as spacer and mixing device. This wire-wrap imposed a significant challenge in the development of the geometrical models for the CFD analyses. Due to thewire-wrap it was not possible to model a full fuel assembly consisting of 40 rods. Therefore,an alternative procedure has been adopted to develop a heat transfer correlation for the HPLWR fuel assembly. This procedure involved the definition of correction factors accounting for the effect of the rod bundle geometry and the wire-wrap spacer with respect toa smooth circular tube with super-critical water.The present paper describes the procedure followed in work package 5 of the HPLWRphase-2 project for the development of a heat transfer correlation for the HPLWR fuel assembly design and presents the derivation of the applied correction factors from a large set of CFD analyses for different representative geometries like an annulus, a single sub-channeland a 4 rod-bundle, all with and without inclusion of the wire wrap.
Place, publisher, year, edition, pages
Research subject SRA - Energy
IdentifiersURN: urn:nbn:se:kth:diva-81606OAI: oai:DiVA.org:kth-81606DiVA: diva2:497665
5th International Symposium on Supercritical Water-Cooled Reactors, ISSCWR-5. Vancouver. March 13-16, 2011
QC 201203302012-02-102012-02-102012-03-30Bibliographically approved