斯里兰卡某别墅项目人工水道水交换能力数值模拟  

Numerical simulation of water exchange capacity in the artificial waterway of Villa Project in Sri Lanka

作　　者：杨潇 周智鹏 陶建峰[1] YANG Xiao;ZHOU Zhi-peng;TAO Jian-feng(College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing,Jiangsu 210098,China;China Power Engineering Consulting Group Co.,Ltd.,Beijing 100029,China)

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098 [2]中国电力工程顾问集团有限公司,北京100029

出　　处：《中国港湾建设》2024年第11期1-6,共6页China Harbour Engineering

基　　金：国家自然科学基金项目(52071129)。

摘　　要：为了论证斯里兰卡某别墅项目人工水道水环境质量,比选人工水道平面布置方案,并从水交换能力角度进行了数值模拟研究。基于MIKE21模型软件中水动力和污染物对流扩散模型,模拟了人工水道所在海域的潮流场和污染物浓度场,并使用示踪剂输移扩散法模拟了人工水道的水交换情况,以水体更新时间为指标对人工水道各子区域的水交换能力进行了评估,分析了2个方案的效果。结果表明,人工水道内部流场主要受涨落潮控制,但由于研究海域潮差较小,加上人工水道为半封闭且狭长的水域,人工水道的水流流速从人工水道口门至末端沿程递减,除靠近口门的2个子区域外,其余子区域的水体更新时间均较长、水交换能力较差;通过开挖渠道优化人工水道的平面布置后,所有子区域的水体更新时间明显缩短,水交换能力得到提升。In order to demonstrate the water environment quality in the artificial waterway of Villa Project in Sri Lanka,a comparative study has been done on the layout plan of the artificial waterway,and a numerical simulation research has been conducted from the perspective of water exchange capacity.Based on the hydrodynamic and pollutant convection diffusion model in the MIKE21 model software,the tidal current field and pollutant concentration field in the sea area where the artificial waterway is located has been simulated.The water exchange situation of the artificial waterway has been simulated by the method of tracer transport diffusion.The water exchange capacity of each sub area of the artificial waterway has been evaluated using the turn-over time as an indicator,and the effectiveness of two plans have been analyzed.The results show that the internal tidal current field of the artificial waterway is mainly controlled by the rising and falling tides.However,due to the small tidal range in the study sea area and the fact that the artificial waterway is a semi-closed and narrow water body,the current speed of the artificial waterway decreases along the way from the mouth to the end.Except for the two sub areas near the mouth,the turn-over time in the remaining sub areas is relatively long and the water exchange capacity is poor;After optimizing the layout of the artificial waterway through excavation of channels,the turn-over time in all sub areas is significantly shortened,and the water exchange capacity is improved.

关 键 词：人工水道 水交换能力 数值模拟 水体更新时间 MIKE21 

分 类 号：U652.7[交通运输工程—港口、海岸及近海工程]