景观水体的水动力优化设计

城市景观水体通常水流不畅，水质难以维持，需要外加机械动力促使水体循环流动。以河网流速〉0．25m／s和驱动装置整体流量最小为控制目标，利用MIKE11软件对上海某景观河网进行了水动力模拟，对驱动装置的安装位置、数量及流量进行方案组合，通过大量试算提出了驱动装置的合理位置及经济流量。实测表明，模拟结果误差在可接受范围内，为工程设计提供了理论指导。

Hydrodynamic Optimization Design of Scenic Water Body

As flow velocity is sluggish, water quality of scenic water body is hard to be main- tained. So mechanic equipment is needed to drive it. To maintain the flow velocity as much as 0.25 m/s and to keep the total flow rate of the driving equipments as low as possible, the hydrodynamic simulation of a scenic stream network in Shanghai was carried out based on MIKE11 software. A number of scenarios were combined to optimize the location, number and flow rate of the driving equipments. The rational location and economic flow rate of the driving equipments were proposed by numerous trials. The actual measurement shows that the simulation error is acceptable. So the simulation method can provide a theoretical guidance for the engineering design.