近海面升力翼的模拟试验分析

An Analysis of Simulation Experiments on the Lifting Airfoil near Sea Surface

对接近海面运动的升力翼的水动力特性进行了模拟试验.试验分析表明,浸深对升力翼的水动力有较大影响,当浸深达到临界值(?)_(cr)时,自由面的影响显著减少.升力翼水动力对规则波呈周期性响应,其中以法向力的响应最为显著.而升力翼的密度谱与模拟海浪谱具有较好的协调性,且呈线性响应.其响应幅值算子是影响水动力极值及有义值的主要因素.

Simulation experiments have been made on the hydrodynamic characteristic of the lifting airfoil moving near the sea surface. It has been found that the submerged depth exerts a fairly great influence on the hydrodynamic forces of the lifting airfoil and there exists a critical depth when the effect of the free surface is markedly reduced. The hydrodynamic forces of the lifting airfoil give a periodic response to regular waves and the response of the normal force is most notable. However, the density spectrum of the airfoil coordinates well and responds linearly with that of the simulated sea wave. The amplitude operator of response is the main factor affecting the extreme value and significant value of the hydrodynamic forces.