摘要
采用κ~ε双方程紊流模型模拟了带掺气槽岸边溢洪道具有大曲率水气交界面的水流流场,给出了溢洪道溢流堰、泄槽及挑流鼻坎的压力分布、流速分布等水力特性并对掺气槽掺气特性进行了定性分析.其中部分结果与模型试验结果吻合良好.对连续式和差动式两种不同坎型挑流鼻坎消能效果进行对比,给出各自预挖坑底板紊动能分布,结果表明多股水舌消能效果优于单股水舌,可为挑流坎型优化设计提供参考.
This paper successfully performed the numerical simulation to the spillway, in which K - E binary equation turbulent flow model was used to simulate the hydraulic flows. It solved the difficulties of simulating the flow with large curvature hydrosphere interface. Some hydraulic characteristics of spillway were given, such as the pressure distributions, the velocity distributions, and the water surface profile. Moreover, parts of the results were compared with the model experiment data and indicated that they were in good agreement. The continuous flip bucket and the hybrid type flip bucket were compared and the distribution of the turbulent kinetic energy were given. The results demonstrated that the energy dissipation of multiple jet was better than the single jet. The conclusion will provide some reference to the design and the optimization.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第5期758-762,共5页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省自然科学基金资助项目(E0710013)
福建省教育厅科研资助项目(JB06059
JB06060)
福州大学发展基金资助项目(0050826031)
关键词
溢洪道
挑流鼻坎
掺气槽
数值模拟
spillway
slip bucket
aeration slot
numerical simulation
