By using cavitation model of Zwart-Gerber-Belamri, the technique of dynamic mesh and sliding mesh, the thrust characteristics of ducted propeller of the underwater vehicle with motion of circle was simulated and analyzed by com-putational fluid dynamics. With the mathematics model of rotary motion analyzed, the rotary motion of underwater vehicle was controlled by compiling the UDF. The results shows: the mathematics model presented in this paper could achieve the rotary motion of underwater vehicle, and the thrust of propeller was periodic stable with simulation results analyzed, because of the unipolarity of the motion, the thrust of two propeller unequaled each other, the main reason was the incoming flow and other simulated conditions.%采用Zwart-Gerber-Belamri空化模型,运用动网格与滑移网格技术,利用计算流体力学的方法模拟水下潜器做回转运动时导管螺旋桨的推力特性.其中对回转运动过程的数学模型进行分析,通过编写UDF对水下潜器回转运动方式进行控制.计算结果表明:本文提出的回转运动数学模型可以实现水下潜器的回转运动,对数值模拟结果的分析可以得知导管螺旋桨所产生的推力是趋于周期稳定变化的,由于回转运动的单向性,两侧导管螺旋桨所产生的推力值不相等,主要原因在于水下潜器主体以及来流等模拟环境条件的影响.
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