Analysis of local hydrodynamic characteristics of wading buildings under tidal action

Abstract

The tidal bore is a kind of nonlinear strong discontinuous flow that has a great impact on the wading buildings. During the tidal wave propagation, the local water flow structure of the wading buildings changes significantly. In order to analyze the evolution characteristics of local hydrodynamics of wading buildings under tidal action, a small-scale mathematical model of tidal current is established, and the local hydrodynamic changes of different forms of spur dikes and piers are studied. The results show that the flow velocity fluctuations in front of the non-submerged shoal dam and the dam head are more fluctuating than the submerged spur dikes, and the influence of the tidal dam on the submerged shoal dam area is more severe; the square piers under the tidal wave The turbulent energy and backwater recirculation zones are larger than circular and streamlined piers.