多自由度下拖曳体迫沉水翼控制力特征研究

Control characteristics of forced submersible hydrofoil with towed body under multiple degrees of freedom

本文采用数值模拟方法分析由“固定水平翼+可操纵转角迫沉襟翼”所构成的迫沉水翼产生的控制力作用下水下拖曳体以及迫沉水翼的动力学特征。采用重叠网格技术,运用相对运动原理分析不同拖曳速度下,多自由度体拖曳体中的迫沉襟翼在一定偏转角范围内正弦摆动运动时的水动力特征。结果表明,本文所采用的通过控制迫沉襟翼转角诱导固定水平翼产生所需要的较大迫沉升力的控制方式,可以提高对拖曳体升沉运动的操纵效率。

In this paper, the dynamic characteristics of underwater towed body and forced hydrofoil under the control force of a forced hydrofoil composed of a fixed horizontal wing and a controllable Angle forced hydrofoil are analyzed by numerical simulation. In the analysis, the hydrodynamic characteristics of the forced flaps in the towed body with multiple degrees of freedom under different towing speeds are analyzed by using the overlapping mesh technique and the principle of relative motion. The analysis results show that the control method adopted in this paper can improve the control efficiency of the towed body heave motion by inducing the fixed horizontal wing to produce a large forced lift force by controlling the change of the thrust flap angle.