长江科学院院报 ›› 2008, Vol. 25 ›› Issue (2): 21-25.

• 江湖泥沙与治理 • 上一篇    下一篇

三维紊流模型在丁坝水流中的应用研究

 崔占峰, 张小峰   

  • 出版日期:2008-04-01 发布日期:2012-03-05

Flow Simulation around Spurdike withThree Dimensional Turbulent Model  

 CUI  Zhan-Feng, ZHANG  Xiao-Feng-   

  • Online:2008-04-01 Published:2012-03-05

摘要: 基于RNG紊流模型,采用VOF法、空度法和璧面函数法分别处理自由面、不规则边界和壁边界,对丁坝附近的水流进行了模拟和研究。采用先进的瞬时流场测量仪器——PIV来测量丁坝的局部平面和剖面流场,对建立的模型进行了验证。模型计算结果与水槽试验和他人试验资料吻合较好,表明模型能够模拟多种情况下的丁坝流动规律及自由面变化。

关键词: 三维紊流, 丁坝, VOF, 空度法, RNG模型

Abstract: RNG turbulent model combining with VOF method, porosity method and wall function was used to simulate and research the flow around a spurdike. To research and analyze the character of flow around the spur dike in model test subtly, an instrument marked PIV was used in a glass flume test. The computed results and the data obtained by the authors in test and previous authors information were compared, and they agree well. This result shows that the model can simulate the flow and free surface around a spurdike under many conditions.