【作者】 袁德奎； 吕迎雪； 孙健； 陶建华；

【Author】 YUAN De-kui LV Ying-xue SUN Jian TAO Jian-hua Tianjin University,Tianjin,300072

【机构】 天津大学机械工程学院力学系；

【摘要】 水交换是海湾的重要水动力学特性,也是研究海湾自净能力的基础.本研究引入"水交换关联矩阵"的方法,将所研究的区域划分成九个子区域,并根据数值模拟结果,计算了各子区域之间的水交换,对比了现状和规划方案的水交换情况.计算结果表明:(1)天津港港池区域相对封闭,与外界水交换较弱;(2)规划方案中天津港南疆港区延长和相应防波堤工程的修建,将减弱原天津港港池区与外界的水交换作用,而若将规划方案中的港池区作为整体来考虑,天津港港池区与外界的水交换作用则是加强了;(3)现状情况下大沽口和北塘口的排海污水对港池区有一定程度的影响,而规划情况下由于各区域问水体交换的变化,大沽口和北塘口的污水对港池区的影响将有所减弱。更多还原

【Abstract】 Water exchange is an important hydrodynamic character of sea bays,and it is the basis to study the environmental capacity of sea bays.In this paper,the relation matrix is introduced to study the water exchange in the area around Tianjin port.The study area is divided into nine sub-areas,and the water exchange among the sub-areas is studied.The water exchange under present terrain and that under the planning terrain is compared.The results show that:l) the water exchange between Tianjin Port and the outside water body is poor.2) The extended southern border and the corresponding construction of the breakwater will weaken the water exchange between original Tianjin Port and the outside sea.3) At present,the water quality in Tianjin Port is affected by the wastewater discharged from Dagu and Beitang to some extent.While,the effect of the wastewater on the water quality in Tianjin Port will decrease alter the extending of southern border due to the change of flow field.更多还原