Numerical Investigation on Suction Flow Control Technology for a Blunt Trailing Edge Hydrofoil

Peng Yang, Chiye Zhang, Hongyeyu Yan, Yifan Ren, Changliang Ye (), Yaguang Heng and Yuan Zheng
Additional contact information
Peng Yang: College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
Chiye Zhang: China Institute of Water Resources and Hydropower Research, Beijing 100038, China
Hongyeyu Yan: College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
Yifan Ren: College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
Changliang Ye: College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
Yaguang Heng: Key Laboratory of Fluid and Power Machinery of Ministry of Education, Xihua University, Chengdu 610039, China
Yuan Zheng: College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China

Mathematics, 2023, vol. 11, issue 16, 1-18

Abstract: The generation of hydro-mechanical resonance is related to the transition of the boundary layer and the development of vortex shedding. The application effect of suction control in hydrodynamics is equally deserving of consideration as an active control technique in aerodynamics. This study examines how suction control affects the flow field of the NACA0009 blunt trailing edge hydrofoil using the γ transition model. Firstly, the accuracy of the numerical method is checked by performing a three-dimensional hydrofoil numerical simulation. Based on this, three-dimensional hydrofoil suction control research is conducted. According to the results, the suction control increases the velocity gradient in the boundary layer and delays the position of transition. The frequency of vortex shedding in the wake region lowers, and the peak value of velocity fluctuation declines. The hydrofoil hydrodynamic performance may be successfully improved with a proper selection of the suction coefficient via research of the suction coefficient and suction position on the flow field around the hydrofoil. The lift/drag ratio goes up as the suction coefficient goes up. The boundary layer displacement thickness and momentum thickness are at their lowest points, and the velocity fluctuation amplitude in the wake region is at its lowest point as the suction coefficient C μ = 0.003. When the suction slots are at the leading edge, the momentum loss in the boundary layer is minimal and the velocity fluctuation in the wake zone is negligible.

Keywords: blunt trailing edge hydrofoil; suction control; boundary layer; transition model (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2227-7390/11/16/3618/pdf (application/pdf)
https://www.mdpi.com/2227-7390/11/16/3618/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jmathe:v:11:y:2023:i:16:p:3618-:d:1221745

Access Statistics for this article

Mathematics is currently edited by Ms. Emma He

More articles in Mathematics from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().