丁坝水流的水槽试验及数值模拟研究

Flume experiment and numerical simulation on flow around a spur dike

该文进行了丁坝绕流水槽试验,采用测压管和激光多普勒测速仪(LDV)测量了正交绕流单丁坝附近的水位和流速,同时利用商用软件CFX,基于有限体积法,采用k-湍流模型,数值模拟了丁坝附近水流的三维流动过程,并将水槽试验结果与数值模拟结果进行了对比分析。实验结果表明,该模型能有效地模拟丁坝附近区域复杂的水流特征,可以在河道整治过程中为丁坝的设计提供基础数据。

Abstract： The flume experiment of flow around a spur dike was carried out. Water level around the spur dike was surveyed by piezometer tubes, and the fluid field was measured by LDV （Laser Doppler Velocimetry）. Based on the method of finite volume, the commercial software CFX with the standard k-ε turbulence model was used to simulate three dimension flow field around a spur dike. Compared with results of the flume experiment, the complex flow characteristic around spur dikes was presented directly and correctly through numerical simulation, and the result would be useful for the design of spur dikes in navigation regulation project.