Bidirectional Fluid–Structure Interaction Study on Hydrofoil Hardness and Oscillation Mode Optimization
This paper investigated the optimization of the hardness and oscillation mode of flexible hydrofoils using bidirectional fluid–structure interaction (FSI) to address the issue of insufficient guidance in engineering applications. A two-dimensional flexible symmetric hydrofoil model of NACA0012 with...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/2/825 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832589165390200832 |
|---|---|
| author | Ertian Hua Mingwang Xiang Qizong Sun Tao Wang Yabo Song Caiju Lu |
| author_facet | Ertian Hua Mingwang Xiang Qizong Sun Tao Wang Yabo Song Caiju Lu |
| author_sort | Ertian Hua |
| collection | DOAJ |
| description | This paper investigated the optimization of the hardness and oscillation mode of flexible hydrofoils using bidirectional fluid–structure interaction (FSI) to address the issue of insufficient guidance in engineering applications. A two-dimensional flexible symmetric hydrofoil model of NACA0012 with a chord length of 1 m was constructed for this research. The hydrodynamic characteristics of low-frequency flexible hydrofoils with varying hardness and oscillation modes were analyzed through numerical simulation. The results indicated that the flexible hydrofoil with a Shore hardness of D50 exhibited the most optimal hydrodynamic performance under low-frequency conditions across the five groups of hardness tests. Among the three commonly utilized oscillation modes, the inboard oscillation mode demonstrated the most favorable performance. The hydrodynamic performance of the flexible hydrofoil surpassed that of the rigid hydrofoil in both inward and outward oscillation motions; however, it was inferior in pure pitching motions. Comparative analysis of the vortex structure and velocity distribution in the flow field revealed that the inward oscillation motion effectively enhanced the kinetic energy of the wake vortex and slowed down vortex dissipation, thereby improving the overall flow velocity. These findings provide theoretical support for the study of flexible hydrofoils and contribute to their advancement in pumping applications under actual ultra-low head conditions. |
| format | Article |
| id | doaj-art-16da5fe7ccd84c4892e2e77086d13c7c |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-16da5fe7ccd84c4892e2e77086d13c7c2025-01-24T13:20:57ZengMDPI AGApplied Sciences2076-34172025-01-0115282510.3390/app15020825Bidirectional Fluid–Structure Interaction Study on Hydrofoil Hardness and Oscillation Mode OptimizationErtian Hua0Mingwang Xiang1Qizong Sun2Tao Wang3Yabo Song4Caiju Lu5College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaThis paper investigated the optimization of the hardness and oscillation mode of flexible hydrofoils using bidirectional fluid–structure interaction (FSI) to address the issue of insufficient guidance in engineering applications. A two-dimensional flexible symmetric hydrofoil model of NACA0012 with a chord length of 1 m was constructed for this research. The hydrodynamic characteristics of low-frequency flexible hydrofoils with varying hardness and oscillation modes were analyzed through numerical simulation. The results indicated that the flexible hydrofoil with a Shore hardness of D50 exhibited the most optimal hydrodynamic performance under low-frequency conditions across the five groups of hardness tests. Among the three commonly utilized oscillation modes, the inboard oscillation mode demonstrated the most favorable performance. The hydrodynamic performance of the flexible hydrofoil surpassed that of the rigid hydrofoil in both inward and outward oscillation motions; however, it was inferior in pure pitching motions. Comparative analysis of the vortex structure and velocity distribution in the flow field revealed that the inward oscillation motion effectively enhanced the kinetic energy of the wake vortex and slowed down vortex dissipation, thereby improving the overall flow velocity. These findings provide theoretical support for the study of flexible hydrofoils and contribute to their advancement in pumping applications under actual ultra-low head conditions.https://www.mdpi.com/2076-3417/15/2/825flexible hydrofoilShore hardness of the hydrofoilbidirectional fluid–structure interactionoscillation modehydrodynamic performance |
| spellingShingle | Ertian Hua Mingwang Xiang Qizong Sun Tao Wang Yabo Song Caiju Lu Bidirectional Fluid–Structure Interaction Study on Hydrofoil Hardness and Oscillation Mode Optimization Applied Sciences flexible hydrofoil Shore hardness of the hydrofoil bidirectional fluid–structure interaction oscillation mode hydrodynamic performance |
| title | Bidirectional Fluid–Structure Interaction Study on Hydrofoil Hardness and Oscillation Mode Optimization |
| title_full | Bidirectional Fluid–Structure Interaction Study on Hydrofoil Hardness and Oscillation Mode Optimization |
| title_fullStr | Bidirectional Fluid–Structure Interaction Study on Hydrofoil Hardness and Oscillation Mode Optimization |
| title_full_unstemmed | Bidirectional Fluid–Structure Interaction Study on Hydrofoil Hardness and Oscillation Mode Optimization |
| title_short | Bidirectional Fluid–Structure Interaction Study on Hydrofoil Hardness and Oscillation Mode Optimization |
| title_sort | bidirectional fluid structure interaction study on hydrofoil hardness and oscillation mode optimization |
| topic | flexible hydrofoil Shore hardness of the hydrofoil bidirectional fluid–structure interaction oscillation mode hydrodynamic performance |
| url | https://www.mdpi.com/2076-3417/15/2/825 |
| work_keys_str_mv | AT ertianhua bidirectionalfluidstructureinteractionstudyonhydrofoilhardnessandoscillationmodeoptimization AT mingwangxiang bidirectionalfluidstructureinteractionstudyonhydrofoilhardnessandoscillationmodeoptimization AT qizongsun bidirectionalfluidstructureinteractionstudyonhydrofoilhardnessandoscillationmodeoptimization AT taowang bidirectionalfluidstructureinteractionstudyonhydrofoilhardnessandoscillationmodeoptimization AT yabosong bidirectionalfluidstructureinteractionstudyonhydrofoilhardnessandoscillationmodeoptimization AT caijulu bidirectionalfluidstructureinteractionstudyonhydrofoilhardnessandoscillationmodeoptimization |