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RESEARCH PRODUCT

Analyses of single- and two-phase flow pressure drops in helical pipes using a modified RELAP5 code

M. De SalveGiuseppe MoranaBruno PanellaMariarosa GiardinaFrancesco Castiglia

subject

Nuclear and High Energy PhysicsEngineeringHydraulicsNuclear engineeringMechanical engineeringReattori nucleari innovativiGeneratori di vapore elicoidalilaw.inventionThermal hydraulicsTUBESlawThermalFluid dynamicsCode (cryptography)General Materials ScienceSafety Risk Reliability and QualityWaste Management and DisposalSettore ING-IND/19 - Impianti NucleariTWO PHASEPressure dropbusiness.industryMechanical EngineeringRELAP5/MOD3.2Fluid mechanicsGeneratori di vapore elicoidali; Reattori nucleari innovativiNuclear Energy and EngineeringHELICOIDAL PIPESTwo-phase flowbusiness

description

Abstract Thermal fluid dynamics analyses on single- and two-phase flows in helical pipes of steam generators to be used in Generation III and IV nuclear reactors have been performed. The study concerned with experimental activities as well code simulations carried out in the framework of a collaboration between the Department of Energetics of the Polytechnic of Torino and the Department of Energy of the University of Palermo. The goal was the validation of models implemented in Relap5/Mod3.2β thermal–hydraulic advanced code to simulate the hydrodynamic behaviour of helical pipe components in spite of the one-dimensional nature of the code. It is shown that much of the experimental data obtained at several national and international research laboratories are well predicted by this modified RELAP5 code for the examined helical pipe geometries.

10.1016/j.nucengdes.2012.06.008http://hdl.handle.net/11583/2499958