不同喷气形式下船舶微气泡减阻水池试验研究

针对一平底型船模，分别在船模底部的首、中部安装多孔硅材料板以生成微气泡，在大型拖曳水池中进行了五种拖曳速度、五种喷气量、三种喷气形式下的对比性试验，试验结果表明，在相同条件下，船模首、中部同时喷气，减阻效果均优于仅在首部喷气的情况，总减阻率达32．8％，在相同拖曳速度和不同喷气形式下，纵倾角随喷气量变化很小，可忽略对总减阻率的影响。

Study of drag reduction of vessel model by microbubble with different injection forms in the towing basin

The drag reduction was studied by means of microbubble injection from two perforated plates fixed respectively at the bow and in the middle of the bilge of a vessel model. The test was carried out in a large towing basin at five different speeds of the carriage, and five gas flow rates with three injection forms. The results showed that the efficiency of drag reduction by microbubbles injection both at the bow and in the middle of the vessel at the same time was better than it was at the bow. The ratio of the total drag reduction about 32.8% was obtained. The effect on the ratio of the total drag reduction due to the trim of the vessel can be neglected at the same speed of the carriage and different injection forms.