中文摘要：

基于多相流理论,利用Fluent6.3对水下轴向串列双圆柱体带空泡绕流进行了数值模拟,分析了空泡形态和阻力特性与其结构参数的关系.结果表明：串列双圆柱体与单圆柱体相比,阻力系数降低;后圆柱体所受总阻力减小至几乎为零,前圆柱体承受了几乎全部的阻力;两圆柱体的间距和前端圆柱体的长度只影响超空泡的形成,前端圆柱体直径是影响阻力系数的主要因素.

英文摘要：

The flow around the underwater two axial circular cylinders in tandem arrangement was investigated computationally based on the multi-phase flow theory using commercial CFD Code Fluent 6.3.The relationships between the cavity shape,drag characteristics,and structure of two axial circular cylinders were studied.The results show that the drag coefficient of two axial circular cylinders decreased compared with the single circular cylinder,that the total drag coefficient of the latter cylinder decreased to almost zero,and the anterior cylinder bore almost all the drag.The two circular cylinders in tandem arrangement spacing and the front circular cylinder length only influenced the supercavitation forming,and the front circular cylinder diameter was the main factor which influenced the drag coefficient.