模型冰尺寸对船舶尾流场影响的PIV试验研究  

PIV experimental study on influence of model ice size on nominal wake field of ice-going ship

作　　者：骆婉珍 郭春雨[1] 吴铁成[1] 苏玉民[1,2] 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学水下智能机器人技术国防科技重点实验室,黑龙江哈尔滨150001

出　　处：《华中科技大学学报（自然科学版）》2017年第11期80-86,共7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(51379043;51209048;51409063);哈尔滨工程大学青年骨干教师支持计划资助项目(HEUCFQ1408)

摘　　要：以76000DWT 1B级冰区加强型巴拿马散货船的缩比模型为研究对象,应用粒子图像测速(PIV)技术对船舶的敞水标称伴流场及船体具有不同尺寸模型冰(5cm×5cm×2cm,10cm×10cm×2cm,15cm×15cm×2cm)附着条件下尾部标称伴流场进行了测量,模型冰选取聚乙烯泡沫挤塑板.并对轴向速度分布、速度矢量分布及流线等进行了分析.研究结果表明:船底及舷侧附着冰的存在,导致裸船体航行时产生的艉部伴流场受到干扰,船壳附近湍流边界层结构被破坏,附着冰状态下均表现为较高的平均伴流值,敞水工况下的平均伴流值、15cm模型冰工况下的平均伴流值、10cm模型冰工况下的平均伴流值、5cm模型冰工况下的平均伴流值呈现依次递增的情况.Based on 76000 DWT Panmax bulker with ice class 1 B,PIV（particle image velocimetry）measuring technology was applied to measure the nominal wake field in open water and attached ice conditions using towing DANTEC PIV system.Matte black polyethylene extruded foam boards was used,and the size of model ice were 5 cm×5 cm×2 cm,10 cm×10 cm×2 cm,15 cm×15 cm×2 cm.Then,the stern nominal flow field was measured as the ship was attached to ice.Also,axial velocity distribution,velocity vector distribution and streamline were analyzed.Research results show that the attachment of ice in the bottom and side shell lead to the disturbtion stern nominal flow field disturbed and the turbulent boundary layer around the shell is destroyed.The attachment of ice produces high mean axial wake fractions,and with the increase of open water condition,the mean axial wake fractions of 15 cm model ice,10 cm model ice and 5 cm model ice increase in sequence.

关 键 词：船体附冰 模型冰 标称伴流场 流场特性 PIV测量技术 

分 类 号：U661.31[交通运输工程—船舶及航道工程]