流固耦合系统库底边界对动水压力的影响

The Influence of Boundary Character of Reservoir Bottom on Hydrodynamics in Fluid-Structure Systems

推导了流固耦合系统库底吸收边界条件的影响矩阵 ,并计算了库底不同反射系数的坝体动力耦合反应。结果表明 :坝体的动力反应与库底边界条件密切相关 ,一般而言 ,反射系数愈大 ,坝体的动力反应也愈大 ,库水的动水压力也相应变大 。

The influencing matrix of absorption boundary conditions of reservoir bottom in fluid structure system is derived, and the dynamic coupling reactions of the dam is calculated with different reflection ratios. The result shows that the dynamic responses of the dam are related closely to the characteristics of the reservoir bottom. The greater the reflection ratio is, the larger the dynamic responses of the dam and the hydrodynamics of the water in the reservoir are. Therefore, ignoring the absorption of the reservoir bottom will result in unacceptable errors.