The present work deepens the analysis of the flow field inside a triangular equilateral channel with turbulence promoters, perpendicular to the radial direction, on both leading and trailing sides, under rotation and both isothermal and nonisothermal conditions (i.e. with centrifugal buoyancy forces). Simulations have been performed at constant Re = 10,000, Ro = 0–0.2–0.6, and Bo = 0–0.08–0.7, the latter corresponding to 80℃ temperature difference between fluid and walls. These conditions match those of the particle image velocimetry measurements, used for comparison against predictions. After proper validation, the numerical modeling helped with the assessment of the flow field evolution along the radial extension of the cooling channel. It has been possible to determine the path of the coolant throughout the channel and localize where the heat transfer would have been enhanced/decreased by secondary flow structures, with respect to the stationary case. Furthermore, a rather Bo-independency of the flow field in this kind of geometry has been confirmed. The analysis presented in this paper finds support from the thermal data available from the open literature, which is rich of thermal analysis indeed, but lacks a detailed description of internal flow fields.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Flow field inside a leading edge cooling channel with turbulence promoters in rotating conditions




    Publication date :

    2017




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    52.30 / 52.50 / 52.50 Energietechnik: Allgemeines / 52.30 Strömungskraftmaschinen, Turbomaschinen
    Local classification TIB:    275/5345/5365/5500




    Heat Transfer Measurements in Leading-Edge Cooling Geometry Under Rotating Conditions

    Cocchi, Lorenzo / Facchini, Bruno / Picchi, Alessio | AIAA | 2019


    Heat Transfer Measurements in a Leading Edge Cooling Geometry under Rotating Conditions

    Cocchi, Lorenzo / Facchini, Bruno / Picchi, Alessio | AIAA | 2018


    Investigation of the Unsteady Flow Field Inside a Leading Edge Slat Cove

    Kaepernick, Kristian / Koop, Lars / Ehrenfried, Klaus | AIAA | 2005


    Wavy Leading Edge Airfoils Interacting with Anisotropic Turbulence

    Gea Aguilera, Fernando / Gill, James R. / Angland, David et al. | AIAA | 2017