中文摘要：

将SPH方法应用于流-固耦合计算中，提出了1种新的直接求解边界压力的方法，并总结了其他4种固定边界处理方法，并详细阐述了不同边界处理方法的优缺点。将该方法与其他两种方法进行了对比，运用此3种直接求解边界压力的方法对静水压力随水深变化情况以及水坝坍塌对结构物的冲击压力进行了计算。数值模拟结果表明，3种方法在处理固定边界条件上都是行之有效的。

英文摘要：

A new method for dealing with solid boundary condition is presented in SPH application. Four other techniques are summarized, and the advantage and disadvantage are elaborated in detail. Comparisons are made for the new method with two of the four techniques for hydrostatic pressure and dynamic pressure of dam breaking problem. The numerical results show that these methods for dealing with solid boundary conditions can be successfully used with similar accuracy but with much less time.