• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire de Mécanique des Fluides de Lille (LMFL)
  • View Item
  • Home
  • Laboratoire de Mécanique des Fluides de Lille (LMFL)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Analysis of performance and flow structures of cycloidal rotors under different pitch-pivot-point and blade camber conditions

Article dans une revue avec comité de lecture
Author
SHI, Lei
531216 Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet [LMFL]
462211 JiangSu University
ZHANG, Desheng
462211 JiangSu University
ccBAYEUL-LAINÉ, Annie-Claude
531216 Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet [LMFL]
ccCOUTIER-DELGOSHA, Olivier
531216 Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet [LMFL]
1050656 Department of Aerospace and Ocean Engineering [Blackburg]

URI
http://hdl.handle.net/10985/24221
DOI
10.1016/j.energy.2023.128997
Date
2023-11
Journal
Energy

Abstract

The performance and unsteady vortical flows of a 2-bladed cycloidal propeller are investigated using the SST γ �� Reθt transition model, under different pitch-pivot-point and blade camber conditions. Firstly, it shows that the results of the present computations match well with the previous numerical data and experiments, in terms of the instantaneous performance and internal flow structures. Then, due to the moderate propulsive force and low power, the cycloidal rotor with a pitch-pivot-point of x/c = 0.25 maximize the efficiency. Moving the pitching location to the leading edge increases the lift and leads to the earlier flow separation on the blade surface. However, as the pitch-pivot-point shifts to the middle chord, the power of the cycloidal rotor increases dramatically because of the massive flow separation, leading to the degradation of the performance. Simultaneously, the symmetrical profiles, involving NACA0012 and 0015, are recommended due to the wide operation condition with high efficiency. The thick symmetrical and asymmetrical airfoils produce the worst performance due to the large power that is consumed. Furthermore, owing to the change of the rotating speed only, the advance coefficient effect is more obvious than the Reynolds number. When analyzing the performance of the rotating system at any position, one should consider the performance, pressure difference, near-wall flows and forces (lift and drag) of each blade.

Files in this item

Name:
LMFL_ENERGY_2023_SHI.pdf
Size:
3.202Mb
Format:
PDF
Embargoed until:
2024-06-01
View/Open

Collections

  • Laboratoire de Mécanique des Fluides de Lille (LMFL)

Related items

Showing items related by title, author, creator and subject.

  • Parametrical study on separation-induced transition and vortex dynamics of a reversed pitching airfoil 
    Article dans une revue avec comité de lecture
    SHI, Lei; WANG, Yefang; ZHANG, Desheng; ccBAYEUL-LAINÉ, Annie-Claude; ccCOUTIER-DELGOSHA, Olivier (Elsevier BV, 2022-11)
    The pitching airfoils, applied to the vertical axis turbines and propellers, are critical to extract more energy from the environment. At retreating side, when the airfoil blunt leading edge becomes the trailing edge, the ...
  • Effect of pitching angle, pitch-pivot-point, blade camber and deflected sharp leading edge on performance and vortical flows of reversed pitching airfoils 
    Article dans une revue avec comité de lecture
    ccSHI, Lei; ZHANG, Desheng; ccBAYEUL-LAINÉ, Annie-Claude; ccCOUTIER-DELGOSHA, Olivier (Elsevier BV, 2023-07)
    The goal of the present work is to investigate the influence of several parameters on the performance and flow structures of reversed pitching airfoils. Firstly, the effect of the turbulence model is evaluated, and the ...
  • Analysis of flow-induced performance change of cycloidal rotors: Influence of pitching kinematic and chord-to-radius ratio 
    Article dans une revue avec comité de lecture
    SHI, Lei; ccCOUTIER-DELGOSHA, Olivier; ccBAYEUL-LAINÉ, Annie-Claude (Elsevier ltd, 2022-08)
    As a new type of the propulsive devices, cycloidal rotor has been attracting more attention recently. The present work concentrates on the analysis of the performance and internal flow field of a two-bladed cycloidal ...
  • Numerical investigations on unsteady vortical flows and separation-induced transition over a cycloidal rotor at low Reynolds number 
    Article dans une revue avec comité de lecture
    SHI, Lei; ccCOUTIER-DELGOSHA, Olivier; ccBAYEUL-LAINÉ, Annie-Claude (Elsevier BV, 2022-08)
    The unsteady vortical flows and laminar-turbulence transition over a 2-bladed cycloidal rotor are investigated numerically at two advance coefficients, with special emphasis on the influence of two turbulence models, ...
  • Analysis of the Unsteady Flow Around a Hydrofoil at Various Incidences 
    Chapitre d'ouvrage scientifique
    SHI, Lei; ccCOUTIER-DELGOSHA, Olivier; ccBAYEUL-LAINÉ, Annie-Claude (Springer, 2020)
    The oscillating hydrofoils used in underwater propulsion devices often experience large variations of the flow incidence, which favors cavitation at large angle of attack, and therefore a severe degradation of the performance, ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales