The upgraded Cheng and Todreas correlation for pressure drop in hexagonal wire-wrapped rod bundles

摘要

The Cheng and Todreas (detailed) correlation (CTD) for wire-wrapped rod bundle friction factor published in 1986 has been identified in Chen a al. (2014) as the most used correlation for design and safety analyses for the Generation IV Sodium Fast Reactor(SFR). Since its publication in 1986, sixteen additional wire wrapped fuel bundle experiments have been performed worldwide providing data to supplement regions of minimal data in the bundle test data base. Based on this valuable new data, the CTD correlation has been refined in the following three aspects and renamed the Upgraded CTD (UCTD) Correlation.