• Login
    View Item 
    •   Home
    • Research Publications
    • Engineering & Technology
    • Department of Mechanical Engineering & the Built Environment
    • View Item
    •   Home
    • Research Publications
    • Engineering & Technology
    • Department of Mechanical Engineering & the Built Environment
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UDORACommunitiesTitleAuthorsIssue DateSubmit DateSubjectsThis CollectionTitleAuthorsIssue DateSubmit DateSubjects

    My Account

    LoginRegister

    About and further information

    AboutOpen Access WebpagesOpen Access PolicyTake Down Policy University Privacy NoticeUniversity NewsTools for ResearchersLibraryUDo

    Statistics

    Display statistics

    A numerical study of active flow control for low pressure turbine blades

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Authors
    Rohr, Christian
    Yang, Zhiyin cc
    Affiliation
    University of Derby
    Issue Date
    2012-09
    
    Metadata
    Show full item record
    Abstract
    Expansion of the slow, recirculating separated region of flow inside a separation bubble on the suction surface of Low Pressure Turbine (LPT) blades is the main source of loss generation as the Reynolds number is reduced. At axial chord Reynolds numbers as low as 30,000, typical of small or high altitude jet engines, the separation bubble expands all the way to the trailing edge of the blade, with a large increase in losses caused by the fully separated flow field. Active Flow Control (AFC) is a promising tool for reducing these losses without altering blade geometry, in order to make smaller, higher flying engines more cost-effective. Alternatively, AFC allows an increase in blade loading such that the number of turbine blades required can be reduced for a given operating point. Jet Flap (JF) is one such control device, and consists of a small opening on the pressure surface of the LPT blade near its trailing edge. By injecting fluid into the free stream normal to the pressure surface, the passage between blades is effectively contracted causing increased acceleration through the throat formed by adjacent blades. This induces a more favourable pressure gradient over the aft portion of the blade below, potentially suppressing the separation bubble altogether, while increasing the suction peak and moving it rearwards. In the current study the Pak-B LPT blade was used to evaluate the suitability of the JF concept as an AFC device for LPT blades. A numerical model was developed in STAR-CCM+ and validated against experimental data
    Citation
    Rohr, C and Yang, Z (2012) A numerical study of active flow control for low pressure turbine blades. In: 4th International Symposium on Jet Propulsion and Power Engineering, 10-12 September, Xian, China.
    Journal
    ISJPPE 2012 Proceeding of 4th International Symposium on Jet Propulsion and Power Engineering
    URI
    http://hdl.handle.net/10545/620663
    Additional Links
    http://www.aconf.org/en-us/conf_51887.html
    http://sro.sussex.ac.uk/41684/
    Type
    Article
    Language
    en
    ISBN
    9787560000000
    Collections
    Department of Mechanical Engineering & the Built Environment

    entitlement

     
    DSpace software (copyright © 2002 - 2021)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.