基于动态来流的非稳态虹吸流动控制与优化

Unsteady Siphon Flow Controlling and Optimizing Based on Dynamic Flow Condition

建立了具有两类自然动态来流的非稳态虹吸流动模型,利用计算流体动力学(CFD)方法分析来流条件对虹吸式流道性能的影响,得到30组实验数据样本.通过虹吸进口的累积动量分析,发现动态来流条件对非稳态虹吸性能影响较大,使用GA-ANN法对来流条件进行优化,当连续来流和小孔泄流两种来流比例为7∶1时虹吸效果最佳,可为虹吸流道设计及非稳态虹吸流动控制研究提供参考.

An unsteady siphon flow model with two initial nature dynamic flows was established. The property of the unsteady siphon under different initial conditions was analyzed by applying Computational Fluid Dynamics （CFD）. The siphon import cumulative momentum analysis results show that the dynamic initial flow conditions have an obvious impact on the property of unsteady siphon flow. Based on the re- suits of CFD, an optimal solution of initial flow conditions was obtained by GA-ANN method. It provides a reference to the design of siphon runner and the research of unsteady siphon flow.