中文摘要：

基于SPH方法（光滑粒子流体动力学）的基本原理,提出一种变质量体积的SPH方法。通过对变质量体积区域粒子采用双重标记的方法,模拟了Poiseuille流的运动过程,并将模拟结果与Poiseuille流的级数解和传统SPH方法数值模拟结果进行了比较,结果表明采用变质量体积SPH方法得到的模拟结果更接近于级数解。该方法为模拟水流与小尺度构件的相互作用等复杂流固耦合问题提供了一种有效的研究思路。

英文摘要：

Based on the basic principle of SPH method, the paper proposed a new SPH method which changes quality and volume, the parti- cles in the region which changed the quality and volume adopted the method of double label, and then simulated the movement of Poiseuille flow, compared the simulation result with Poiseuille flow theoretical analysis solution and simulation result by traditional SPH method. The result shows that numerical simulation applying SPH method which changes quality and volume is much closer to theoretical solution result. The use of the method which changes quality and volume will lay a good foundation for widely application of SPH method in numerical simula- tion about the interaction between fluid and minisize constructional member.