The dynamic characteristics of the flow around pile directly determine distribution law force on pile, which is basis calculation load hydraulic structure. At present, model test and numerical simulation methods are mainly used to study pile. There problems scale effect accuracy in laboratory test, inherent method, such as determination medium parameters, mesh division, boundary conditions. The...

The energy-conversion stability of hydropower is critical to satisfy the growing demand for electricity. In low-head plants, a gravitational surface vortex easily generated, which causes irregular shock vibrations that damage turbine performance and input-flow stability. complex fluid dynamic problem with high nonlinear features. Here, we thoroughly investigate its essential hydrodynamic proper...

Abstract To study the temporal and spatial variation characteristics of hydrodynamic forces in Rule Lake, a two-dimensional mathematical model shallow water lake was established based on MIKE 21, flow field Lake under action topography, wind inflow were simulated analyzed. The results show that heterogeneity hydrodynamics area is obvious, velocity presents gradient change characteristic high we...