Numerical Simulate Runup And Overtopping Of Slope Dike Base On Momentum Source

The sloping buildings are used for preventing wave. More and more scholars and researchers are researching wave’s run-up and overtopping by numerical and physical simulation. The numerical simulation has the incomparable advantages compared with the laboratory physical model experiment, such as low cost, no restrict space, reducing errors effect of model scale. So more and more scholars are researching run-up and overtopping of slope dike by means of numerical simulation.Based on the FLUENT software, the k-ε turbulence model and finite volume method, the volume of fluid method traces free surface. According to the continuity equation and momentum equation, we are deducing source function. According to numerical sink’s function and with the development of UDF realize wave making and no reflection wave flume. On the one hand, the wave flume of momentum source could eliminate the second reflecting wave of building and realize long time of wave. In the other hand, it reduces the decay of wave due to reduce the length of wave sink.According to this paper’s method, we established numerical wave flume of no reflection. Based on the literature’s model, we are verifying the numerical simulation slope dike’s wave run-up and overtopping on the basis of momentum source in this paper. The paper analyzes the wave’s influence factors, such as platform’s width, platform’s height and wave steepness. After simulating many groups of wave conditions with breast wall and no breast wall, drawing the vector diagram of wave run-up and overtopping and analyzing all wave movement characteristics in a cycle. In the last, the trend is consistent through comparing with result of numerical and physical simulation. The result shows that the no reflection numerical wave tank can realize the accuracy of the calculation and the high efficiency, and is a guiding role for actual project’s research.