Effect of artificial reef assemblage with different inflow velocities and layout spacings on flow field
The deployment of artificial reefs can improve the ecological environment of local water areas in rivers,creating a favorable habitat for aquatic organisms such as fish.Based on the computational fluid dynamics(CFD)method,we study the hydrodynamic characteristics of a combination of triangular prism artificial reefs in the upper reaches of the Yangtze River.Using the geometric features of upwelling and back-eddy flows as parameters,we analyze effect of different inflow velocities(1.5 m/s,2.4 m/s,and 3.0 m/s)and layout spacings(0.5 m,1.5 m,and 2.5 m)on the flow field.The results show that with an increase in inflow velocity,the geometric characteristics of upwelling and back-eddy flow show minimal variation under the same artificial reef combination condition.As the layout spacing increases,the geometric characteristics such as the maximum height and volume of upwelling and back-eddy flow initially increase and then decrease under the same artificial reef combination condition,with 1.5 m being the optimal deployment spacing.Additionally,under the same flow velocity or layout spacing,an increase in the number of artificial reef combinations leads to a gradual increase in the maximum height and volume of upwelling and back-eddy flow,with a configuration of seven reefs as the optimal combination.
upper reaches of the Yangtze Rivertriangular prism artificial reef assemblageupwellingback-eddy flownumerical simulation
万方数据
维普
