Research on Control and Optimization of Hydrofoil Cavitation Flow Field

ZHAO Wei; LIU Zhenwei; CHEN Shiyang; DING Yaodong; LI Ping

doi:10.7652/xjtuxb202305008

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Research on Control and Optimization of Hydrofoil Cavitation Flow Field

更新时间：2025-07-09

- Research on Control and Optimization of Hydrofoil Cavitation Flow Field
- Vol. 57, Issue 5, Pages: 78-88(2023)
- 作者机构：
  
  西安交通大学热流科学与工程教育部重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202305008
  CLC： TK730
- Online First：10 May 2023，
  
  Published：2023
- 稿件说明：
移动端阅览
ZHAO Wei, LIU Zhenwei, CHEN Shiyang, et al. Research on Control and Optimization of Hydrofoil Cavitation Flow Field[J]. 2023, 57(5): 78-88.
DOI：

ZHAO Wei, LIU Zhenwei, CHEN Shiyang, et al. Research on Control and Optimization of Hydrofoil Cavitation Flow Field[J]. 2023, 57(5): 78-88. DOI： 10.7652/xjtuxb202305008.

摘要

为抑制水力机械中水翼绕流流场空化的形成和发展

通过对比分析NACA0009、NACA0012以及Clark Y 3种经典水翼不同攻角和空化数工况下的性能

获得型线优化思路

建立了新水翼。进一步地

在新水翼上布设多个流动控制结构

通过广义模式搜索算法进行快速优化设计

对空化流场进行整体控制和局部调控。研究结果表明:新水翼吸力面凸起高度介于NACA0012和Clark Y水翼之间

最大凸起高度位置后移; 新水翼的空化性能和水动力性能提升

升阻比最大提高48.8%

空泡脱落和回射流发展得到抑制; 在新水翼吸力面均匀布设的多个控制结构能够对回射流起到连续抑制作用

改善压力分布; 通过优化算法实现了控制结构设计的精准快速寻优

优化后的水翼性能得到了进一步提升

升阻比继续提高4.8%～13.6%

空化厚度与长度减小。型线优化和添加连续流动控制结构实现了空化流场的整体和局部控制

是提高水翼的空化和水动力性能的有效方法。

Abstract

In order to suppress the formation and development of cavitation in the flow field around the hydrofoil

this paper establishes a new hydrofoil with its profile optimized by comparing and analyzing the performance of three classical hydrofoils

NACA0009

NACA0012 and Clark Y under different working conditions. Then

several fluid control structures are uniformly arranged on the new hydrofoil

and optimized rapidly by generalized pattern search algorithm to realize general and local control of cavitation in the flow field. The results show that the new hydrofoil has a suction surface whose bulge height is between those of the NACA0012 and Clark hydrofoils

and its maximum bulge position is backward. The new hydrofoil shows improved cavitation performance(cavitation shedding suppressed)and hydrodynamic performance(backflow development suppressed)

with its lift-drag ratio up by as high as 48.8%. The multiple control structures evenly arranged on the suction surface of the new hydrofoil can continuously suppress the backflow and improve the pressure distribution. They are accurately and rapidly optimized with an optimization algorithm. As a result

the performance of the optimized hydrofoil is further improved

with the lift-drag ratio further up by 4.8%—13.6%

and the thickness and length of cavitation reduced. Therefore

optimizing the profile and adding continuous flow control structures can realize the overall and local control of the cavitation flow field

providing an effective way to improve the cavitation and hydrodynamic performance of the hydrofoil.

关键词

Keywords

references

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