摘要
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 .
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.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第12期78-80,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 (19972 0 5 0 ) .
关键词
船模
喷气方式
微气泡
多孔板
减阻率
vessel model
gas injection forms
microbubble
perforated plate
drag reduction ratio
