中文摘要：

本文采用光滑粒子流体动力学（简称SPH）对流固耦合问题进行模拟。流体域和固体均采用光滑粒子流体力学描述，建立了流体和固体控制方程的光滑粒子流体动力学模型，将流体和固体均看做是拉格朗日粒子，并利用插值核函数获得粒子在初始状态后携带的信息，进而求得流场和固体的相关参数。文章采用该方法对典型的流固耦合问题进行了模拟计算，并与已有试验结果进行了对比分析，模拟结果与已有试验结果符合良好，显示了该方法的准确性和精确性。证实了SPH方法应用于流固耦合问题计算的可行性。

英文摘要：

Smoothed particle hydrodynamics （SPH） is employed to simulate numerically fluid-structure interaction （FSI）. Fluid and solid are both described by SPH. SPH models of fluid and solid are established, in which fluid and solid are viewed as Lagrangian particles. Interpolating kernel is adopted to obtain the information carried by the particles after initial state, and the related parameters of fluid and solid are calculated as a result. The method is applied to simulate a typical FSI problem, and the results are compared to those of the tests. The results agree well with those from the previous tests, which show the accuracy of the present method. It proves the feasibility of the SPH method in computation of FSI.