可再生能源2018，Vol.36Issue(4)：626-632,7.
基于CFD的填砾抽灌同井数值模拟
Numerical simulation of forced external circulation standing column well based on CFD
摘要
Abstract
Based on the existing forced external circulation standing column well(FECSCW) sandbox experimental table, two multi-zone coupled 3D CFD models in different sizes were established.The models were validated by outlet water temperature (OWT), hourly heat absorption quantities (HHAQ) and accumulative heat absorption quantities (AHAQ) of thermal well. The experimental value of OWT and HHAQ agree well with the simulation value. The relative error of AHAQ in 25 min is 3.28% and 5.56% respectively. The results show that the size of the sandbox will affect the aquifer flow/temperature field. The backfill gravel zone will induce the flow transfixion, while the width of the seal zone (WSZ) and the distances between pumping and injection screens (DPIS)will affect the rate of inlet water entering the pumping screen.Therefore,it should increase the distance between injection screen and upper roof of sandbox,and the distance between thermal well and the walls. Moreover, the WSZ and DPIS need increase too, in order to reducing the flow/thermal transfixion.关键词
填砾抽灌同井/流贯通/热贯通/数值模拟/砂箱实验Key words
forced external circulation standing column well/flow transfixion/thermal transfixion/numerical simulation/sand tank experiment分类
能源科技引用本文复制引用
宋伟,朱柯,刘远周..基于CFD的填砾抽灌同井数值模拟[J].可再生能源,2018,36(4):626-632,7.基金项目
国家自然科学基金项目(41602278) （41602278）
中国博士后科学基金项目(2016M601129) （2016M601129）
供热供燃气通风及空调工程北京市重点实验室研究基金资助课题(NR2016K03) （NR2016K03）
北方工业大学青年拔尖人才培育计划资助项目(XN018032). （XN018032）
