哈尔滨工程大学学报2023，Vol.44Issue(12)：2079-2086,8.DOI:10.11990/jheu.202309031
带定位格架棒束通道两相流相界面输运特性
Interfacial structure transport characteristic of two-phase flow in rod bundle channels with a spacer grid
摘要
Abstract
To further elucidate the distribution characteristics of interfacial structure parameters such as void frac-tion and interfacial area concentration in rod bundle channels,this study investigates the air-water two-phase flow in the 5×5 rod bundle channels using a prototype spacer grid.The local distribution of phase interface flow parameters such as void fraction,interfacial area concentration,bubble velocity,and Sauter mean diameter were measured u-sing a four-sensor conductivity probe at different height sections in the flow direction.The results reveal that the ra-dial distribution of the phase interface parameters is mainly affected by the combined effect of lateral forces such as lift force,wall lubrication force,and turbulent dispersion force.The spacer grid mainly affects the distribution characteristics of phase interface parameters through turbulent vortex aggregation and grid shear fracture,turbulent vortex enhances bubble coalescence and grid shear enhances bubble breakup.There is a pressure drop zone down-stream of the spacer grid,and the distribution of interfacial parameters inside it undergoes drastic changes.This study provides a reference for optimizing two-phase flow phase interfacial transport models for rod bundle channels.关键词
棒束通道/定位格架/两相流/电导探针/泡状流/空泡份额/相界面浓度/相态分布Key words
rod bundle channel/spacer grid/two-phase flow/conductivity probe/bubbly flow/void fraction/in-terfacial area concentration/phase distribution分类
能源科技引用本文复制引用
任佳星,王若好,王方东,乔守旭,韦宏洋,谭思超,高璞珍..带定位格架棒束通道两相流相界面输运特性[J].哈尔滨工程大学学报,2023,44(12):2079-2086,8.基金项目
国家自然科学基金青年基金项目(11905039) （11905039）
中核集团"青年英才"项目 （）
中央高校科研业务费专项资金项目(3072022TS1502). （3072022TS1502）
