IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i16p4105-d396178.html
   My bibliography  Save this article

Effect of Various Coolant Mass Flow Rates on Sealing Effectiveness of Turbine Blade Rim Seal at First Stage Gas Turbine Experimental Facility

Author

Listed:
  • Seok Min Choi

    (Department of Plant Technology Energy Systems Research Division, Korea Institute of Machinery & Materials, Daejeon 34103, Korea)

  • Seungyeong Choi

    (Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea)

  • Hyung Hee Cho

    (Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea)

Abstract

The appropriate coolant mass flow of turbine blade rim seal has become an important issue as turbine blades are exposed to increasingly higher thermal load owing to increased turbine inlet temperature. If the coolant is deficient, hot gas ingresses to the rim seal, or if sufficient, the efficiency of turbine decreases. Therefore, we analyzed sealing effectiveness of rim seal derive appropriate coolant mass flow rate at various conditions. The experimental facility was modified from one designed for an aero-engine gas turbine. Rotational Reynolds number varied from 3 × 10 5 to 5 × 10 5 based on rotational speed. Pressure was measured at various locations in the shroud, endwall, and rim seal. CO 2 concentration was measured at various rim seal locations to analyze sealing effectiveness. Measured results showed that 1.35% coolant mass flow rate of rim seal exhibited a little ingress effect, whereas lower coolant mass flow rates exhibited higher ingress effect. A predicted correlation for sealing effectiveness of rim seal was derived at various rotational Reynolds number and coolant mass flow rate. The correlation will be useful for turbine cooling design, helping to predict sealing effectiveness of rim seals during preliminary design processes for new gas turbines.

Suggested Citation

  • Seok Min Choi & Seungyeong Choi & Hyung Hee Cho, 2020. "Effect of Various Coolant Mass Flow Rates on Sealing Effectiveness of Turbine Blade Rim Seal at First Stage Gas Turbine Experimental Facility," Energies, MDPI, vol. 13(16), pages 1-16, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:16:p:4105-:d:396178
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/16/4105/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/16/4105/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Erdem Gorgun & Mahmut Faruk Aksit & Yahya Dogu, 2020. "A Study of Cloth Seal Leakage Performance Based on Geometry and Pressure Load," Energies, MDPI, vol. 13(22), pages 1-20, November.
    2. Yuxin Liu & Benzhuang Yue & Xiaozhi Kong & Hua Chen & Huawei Lu, 2021. "Effects of Front Plate Geometry on Brush Seal in Highly Swirling Environments of Gas Turbine," Energies, MDPI, vol. 14(22), pages 1-15, November.
    3. Sabina Nketia & Tom I-P. Shih & Kenneth Bryden & Richard Dalton & Richard A. Dennis, 2023. "Large Eddy Simulation of Rotationally Induced Ingress and Egress around an Axial Seal between Rotor and Stator Disks," Energies, MDPI, vol. 16(11), pages 1-25, May.

    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:16:p:4105-:d:396178. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.