轴线间距对圆柱体低速并联入水空泡演化影响试验研究

In order to analyze the influence of cavity interactions on themselves in the parallel water entry process, an experimental study on the parallel water entry was carried out based on the method of high-speed photography. Comparing the results of the experiments of double cylinders with single cylinder, changes of cavity evolution in the water entry process of two parallel cylinders were observed, the cavity evolution mechanism and the varing laws of cavity evolution with the variation of axis distances were obtained. It was shown that the shape of double cavity keeps mirror symmetry in the process of parallel water entry. For the cavity closed below water surface, with the increase of the axis distance of two cylinders, the cavity contour in the inner region between two cylinders grows larger, and the growth in the deeper depth is smaller than that is in the shallower depth. For the cavity closed on the water surface, with the increase of the axis distance, the cavity growth in the inner region between two cylinders tends to be fuller and the clouding phenomenon gradually weakens off.