HYDRAULIC EXPERIMENTS ON THE FLOW AROUND OPEN DYKE

Numerical simulation of turbulent flow around the dtmb4119 propeller in open water conditions

In this study, ANSYS-FLUENT packages are employed to simulate the turbulent flow around DTMB4119 propeller in open water conditions. In order to form a mesh, the multiple reference frame (MRF) methodology is used. The results are compared with the experimental results and a good conformity is obtained, which endorses numerical simulation. Furthermore, the  turbulence model is used, which is sup...

the effects of changing roughness on the flow structure in the bends

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Shape Effects and Definition of Hydraulic Radius in Manning 's Equation in Open Channel Flow

In the Manning equation the hydraulic radius can be defined as the cross-section dimension of the shape. In pipe flow the bed shear stress is assumed to be uniformly distributed along the wetted perimeter which cannot be true in open channel flow. Hence, three approximation of the true boundary shear-stress distribution are examined and more practical conveyance depth or resistance radius formu...

Bow-wave-like hydraulic jump and horseshoe vortex around an obstacle in a supercritical open channel flow

Experiments on hydraulic relations for flow over a compound sharp-crested weir

1 Sinotech Engineering Consultants, LTD. Geotechnical Engineering Department, 12F, 171, Nanking E. Rd. Sec.5, Taipei 10570, Taiwan, Republic of China. 2 Department of Soil and Water Conservation, National Chung Hsing University, 250 Kuo Kuang Rd., Taichung 402, Taiwan, Republic of China. 3 Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan 70101, Taiwan, Repub...