IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i7p1673-d340793.html
   My bibliography  Save this article

Aerodynamic Investigation of Datum and Slotted Blade Profiles under Different Mach Number Conditions

Author

Listed:
  • Yumeng Tang

    (National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100191, China)

  • Yangwei Liu

    (National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100191, China
    Collaborative Innovation Center of Advanced Aero-Engine, Beihang University, Beijing 100191, China)

Abstract

Mach number effects on loss and loading are evaluated in both the datum and slotted compressor profiles under a wide range of incidences based on two-dimensional (2D) computational fluid dynamic (CFD) simulations. First, total pressure loss and loading abilities are compared. Then, three kinds of deficit thickness are defined and evaluated, and a correlation is made between the loading and the momentum deficit thickness at the profile trailing edge. Finally, the nondimensionalized destruction of mean mechanical energy and dissipation function are employed to analyze the loss mechanism. The slotted profile broadens the low loss range towards the positive incidence range. The slotted profile allows a higher diffusion factor (DF) than the datum profile. It is hard to distinguish failure simply based on the DF values, whereas the Zweifel loading coefficient connects well with the low momentum deficit in the profile trailing edge. The peak of the V-shaped distributions in the Ψ - θ d e f plot could better suggest the design condition and determine the correct operating range despite the occurrence of bulk separation. The slotted profile gains the ability of the boundary layer flow near the suction surface to resist the adverse pressure gradient, hence, a reduced shear thickness and a uniformed downstream flow field is obtained.

Suggested Citation

  • Yumeng Tang & Yangwei Liu, 2020. "Aerodynamic Investigation of Datum and Slotted Blade Profiles under Different Mach Number Conditions," Energies, MDPI, vol. 13(7), pages 1-22, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1673-:d:340793
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/7/1673/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/7/1673/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Du, Juan & Li, Yiwen & Li, Zhihui & Li, Jichao & Wang, Zinan & Zhang, Hongwu, 2019. "Performance enhancement of industrial high loaded gas compressor using Coanda jet flap," Energy, Elsevier, vol. 172(C), pages 618-629.
    2. Yangwei Liu & Jinjing Sun & Lipeng Lu, 2014. "Corner Separation Control by Boundary Layer Suction Applied to a Highly Loaded Axial Compressor Cascade," Energies, MDPI, vol. 7(12), pages 1-14, November.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Sun, Shijun & Wang, Songtao & Chen, Shaowen, 2020. "The influence of diversified forward sweep heights on operating range and performance of an ultra-high-load low-reaction transonic compressor rotor," Energy, Elsevier, vol. 194(C).
    2. Nakhchi, M.E. & Naung, S. Win & Rahmati, M., 2022. "Influence of blade vibrations on aerodynamic performance of axial compressor in gas turbine: Direct numerical simulation," Energy, Elsevier, vol. 242(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1673-:d:340793. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.