水上飞机汲水效率水动特性分析

Analysis of Hydrodynamic Characteristics of Water-drawing Efficiency for Seaplanes

为了评估某水上飞机的汲水性能,开展缩尺比模型汲水效率研究,定量分析汲水效率的变化规律。在水面飞行器固定姿态和考虑自由液面的条件下,研究不同缩尺比模型之间汲水效率的关联性,分析缩尺比对汲水效率的影响,并对实机汲水效率进行计算分析。通过数值模拟和水池试验得到水上飞机在汲水滑行过程中的汲水效率及流场特征。数值模拟结果和水池试验结果对比表明,两者随速度的变化趋势基本相同,流场特征基本一致,且汲水效率大部分计算误差在10%以内,说明数值模拟精度较高、利用该方法进行汲水效率预报是可行的。研究结果对水上飞机汲水性能的研究具有一定的指导意义。

In order to evaluate the water-drawing performance of a seaplane,a study on the waterdrawing efficiency of a scaled model was carried out,and the variation law of the water-drawing efficiency was quantitatively analyzed.Under the condition of fixed attitude and considering free surface,the correlation between different scale models is studied,and the influence of scale ratio on the water-drawing efficiency is analyzed,and the actual water-drawing efficiency is calculated and analyzed.The water-drawing efficiency and flow field characteristics of the seaplane during swabbing and taxiing are obtained through numerical simulation and pool test.Compared with the numerical simulation results and pool test results,the variation trend with speed is basically the same,the flow field characteristics are basically the same,and most of the calculation errors of the water-drawing efficiency are within 10%,indicating that the numerical simulation accuracy is high,and it is feasible to use this method to predict the swabbing efficiency.The research results have certain guiding significance for the study of the water-drawing performance of seaplanes.