This document aims to survey the studies widely conducted on the heat transfer models and pressure drops evaluation to be used in T/H system codes for the safety assessment of Liquid Metal Reactors, in particular devoted to wire-wrapped rod bundles (SFR-like). An overview of a wide set of empirical correlations for single-phase heat transfer in tubes and rod bundles for heavy liquid metal is given as well as the most extensively accepted methods to estimate the pressure drops on wire-wrapped rod bundle configurations, collecting the most valuable literature in these fields, without the claim to be exhaustive. Finally, the main heat transfer and pressure drop correlations are tested against a SFR-like rod bundle to verify their performances in predicting the thermal exchange between the clad and sodium coolant, and the pressure drops through the core in hexagonal wire-wrapped configuration. The results here obtained aim to improve the consistency of the simulations conducted with the system codes.
Titolo: | Review of heat transfer and pressure drop correlations for liquid metal in T/H system codes |
Autori: | |
Data di pubblicazione: | 28-gen-2016 |
Handle: | http://hdl.handle.net/20.500.12079/7878 |
Appare nelle tipologie: | 5.2 Documento in Garanzia della Qualità |