中文摘要：

给出了海底沉积物静水压力驱动取样器驱动单元的基本结构。建立了取样器驱动单元内部流道的流动实体,并对其进行了网格划分。利用CFD软件对驱动单元内部流场进行了数值模拟计算,得到了该内部流场的速度和压力分布。研究结果表明取样器驱动单元排水口的形状对取样器排水流量的影响较大,通过改变排水口形状,可以提高取样器取样效率。模拟计算结果对优化设计取样器驱动单元内部结构,提高取样器取样效率具有指导意义。

英文摘要：

The basic structure of a drive unit of seafloor sediment hydrostatic corer was given.A model of the flow entities inside the hydrostatic corer drive unit was proposed and a mesh was gained.Based on CFD software,the flow field inside the drive unit was numerically simulated and its velocity and pressure distribution were obtained.The results indicate that the shape of the drive unit outlet has significant effects on the drainage flow,change the drive unit shape can improve the sampling efficiency of samplers,and it can be a guide for internal structure optimum designing of a drive unit and improving the efficiency of the hydrostatic corer sampling.