中高水头船闸三角门流固耦合动力特性分析

摘要

船闸三角门考虑流固耦合作用下的自振特性是分析闸门流激振动的关键因素。采用空间有限元数值模拟，分析得到了三角闸门在不同水位条件下的自振频率和振型模态。计算表明，流固耦合作用对闸门自振特性的影响，总是使闸门的自振频率下降，振型模态也相应发生转变。在计算分析的基础上，对船闸三角门的安全运行操作提出了合理化建议。%　　With fluid-structure interaction effect considered, the key factor in the analysis of flow-induced vibration of the sector gate is to get self-vibration characteristics. Adopting the finite element numerical method, we get the self-vibration frequency and the modal characters of the sector gate in different water level conditions. The gates are made to decrease its self-vibration frequencies and change modal characters, which are shown by calculations. Reasonable suggestions on the safe operation of the gate are put forward on the basis of computation and analysis.