管袋堤坝波浪作用下波浪压力的数值模拟研究

波浪作用是影响管袋筑坝的最主要外部荷载,关系到管袋结构的安全与稳定。为了解管袋堤坝在波浪作用下的波浪压力,基于流体力学计算软件FLUENT建立数值水槽模型,通过设定不同的边界条件,采用源造波法模拟不同波高、周期、水深、坡率下波浪与管袋坝面的相互作用,计算管袋受力和波陡、坡率之间的关系,并拟合相应关系曲线得到管袋坝的受力和波陡、坡率之间的函数关系式。结果表明,该方法的结果与物理试验过程中获得的规律相符,具有一定的实用性。

Numerical Simulation of Wave Pressure under Waves of Geo tube Dam

The action of wave is the main external load affecting geo tube dam construction, and it is related to the security and stability issues of tube bag structure. In order to understand the wave pressure of tube embankment under wave action, the fluid mechanics calculation software FLUENT is used to establish numerical flume model by adopting the interaction between source wave simulation of tube bag and the dam surface wave. By setting different boundary conditions, and simulating different wave height, period, and water depth as well as the interaction of different slope rate, we can calculate the relationship among the stress condition of the geo tube, the wave slope and the slope rate, and get the functional expression with fitting the corresponding relational curve. It shows that the results obtained by the proposed method are in accordance with the rules of physical test, which has a certain practicality.