Force Characteristics of Flowing Water Around the Inverted Siphon Pier at High Reynolds Number
To study on the flow characteristics around outlet of gate pier in inverted siphon,the typical inverted si-phon of the South-to-North Water Diversion project is taken as an example.The inverted siphon model is established based on Flow3D software,and the model is verified based on the field prototype measured water level and velocity.Based on this model,the flow characteristics around the gate pier at Reynolds number range of 6.17×106-9.38×106 are simulated.The results show that under the condition of high Reynolds number,the fluctuation amplitude of liquid level caused by flow around gate pier increases with the increase of Reynolds number,and the fluctuation of liquid level at mid-dle pier is significantly greater than that at side pier.The vorticity of the tail vortex behind the pier continues to increase,and the Reynolds number has little effect on the Strauhar number.The force asymmetry of the side pier is obvious.The bias ratio of the characteristic velocity between the side pier chambers increases first and then decreases,and the centrifu-gal distance caused by the bias effect keeps increasing.This study can improve the flow pattern of water conveyance pro-ject.
middle route of south-to-north water diversion projectKarman vortex streetflow around gate pierdrift effectinverted siphon
NETL
NSTL
万方数据
维普
