D形柱对摆动水翼水动力性能影响分析  

Analysis of influence of D-cylinder on hydrodynamic performance of flapping hydrofoil

作　　者：舒蒋鹏 石小涛[1,2] 陈小龙[1,2] 周柳青 王思莹 胡晓[1,2] 张立胜[1,2] SHU Jiangpeng;SHI Xiaotao;CHEN Xiaolong;ZHOU Liuqing;WANG Siying;HU Xiao;ZHANG Lisheng(Hubei International Science and Technology Cooperation Base of Fish Passage,China Three Gorges University,Yichang 443002,China;College of Hydraulic and Environmental Engineering,China Three Gorges University,Yichang 443002,China;Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]三峡大学湖北省鱼类过坝技术国际科技合作基地,湖北宜昌443002 [2]三峡大学水利与环境学院,湖北宜昌443002 [3]武汉理工大学新材料力学理论与应用湖北省重点实验室,湖北武汉430063

出　　处：《广西大学学报（自然科学版）》2024年第1期69-77,共9页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金优秀青年科学基金项目(51922065);国家自然科学基金项目(52279069);湖北省高等学校优秀中青年科技创新团队计划项目(T201703)。

摘　　要：为了研究D形柱对摆动水翼的水动力性能影响机制,基于计算流体力学(CFD)方法,利用Fluent的动网格技术,计算均匀流场和D形柱尾流场中摆动水翼的水动力性能。通过改变摆动水翼的摆动频率和升沉振幅,计算摆动水翼在均匀流场下以及D形柱尾流场中的推进性能,并结合流场的压力分布云图和涡结构进行分析。结果表明:摆动频率和升沉振幅的增加均可以提升摆动水翼的平均推力;D形柱尾流场中摆动水翼的平均推力始终大于均匀流场中摆动水翼的平均推力;D形柱脱落的涡与摆动水翼前缘涡发生挤压作用,使摆动水翼的尾涡区域增大,脱落的涡耗散得更快,涡对之间诱导作用更强,产生更大的推力。In order to study the influence mechanism of the D-cylinder on the hydrodynamic performance of the flapping hydrofoil,the hydrodynamic performance of the flapping hydrofoil in the uniform flow field and D-cylinder wake field was calculated based on computational fluid dynamics(CFD)method and Fluent's dynamic mesh technology.By changing the flapping frequency and heave amplitude of the flapping hydrofoil,the propulsion performance of the flapping hydrofoil under the uniform flow field and the D-cylinder wake field was calculated,and the pressure distribution contour and vortex structure of the flow field were analyzed.The results show that the increase of flapping frequency and heave amplitude can increase the average thrust of the flapping hydrofoil.The average thrust of the flapping hydrofoil in the D-cylinder wake field is always greater than that of the flapping hydrofoil in the uniform flow field.The shedding vortex of the D-cylinder compresses with the leading edge vortex of the flapping hydrofoil,so that the trailing vortex area of the flapping hydrofoil is enlarged,the shedding vortex dissipates faster,and the inducing effect between the vortex pairs is stronger to generate greater thrust.

关 键 词：摆动水翼 水动力性能 动网格 D形柱 涡结构 

分 类 号：TP24[自动化与计算机技术—检测技术与自动化装置] O35[自动化与计算机技术—控制科学与工程]