Three-dimensional solutions of the Navier-Stokes equations for a turbine blade with a turning angle of 180 degrees have been computed, including blade tip treatments involving cavities. The geometry approximates Pratt & Whitney's preliminary design for the GGOT (Generic Gas Oxidizer Turbine). The data presented here will be used as a means of comparison for experimental data to be obtained from a linear cascade of comparison for experimental data to be obtained from a linear cascade being built and tested at The University of Alabama, using the original GGOT blades. Results have been computed for a blade with 1% clearance, based on chord, and three different cavity sizes. All tests were conducted at a Reynolds number of 4x107/m. The grid contains 39,440 points with 10 spanwise planes in the tip clearance region of 5.008E-04 m. Streamline plots and velocity vectors, together with velocity divergence plots reveal the general flow behavior in the clearance region. Blade tip temperature calculations suggest placement of a cavity close to the upstream side of the blade tip for reduction of overall lade tip temperature. The solutions do not account for the relative motion between the endwall and the turbine blade. The solutions obtained are generally consistent with previous work done in this area.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Numerical analysis of turbine blade tip treatments


    Additional title:

    Numerische Untersuchung über die Formgebung von Turbinenschaufelblattspitzen


    Contributors:

    Published in:

    Publication date :

    1992


    Size :

    9 Seiten, 23 Bilder, 8 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Numerical Analysis of Turbine Blade Tip Treatments

    Whitaker, Kevin W. / Gopalaswamy, Nath S. | SAE Technical Papers | 1992



    Numerical analysis of turbine blade cooling ducts

    Noot, Marc Johannes | TIBKAT | 1997


    Numerical Analysis of an Optimized Wind Turbine Blade

    Singh, Ravi P. / Kumar, Praveen / Sangha, Gurjeev S. et al. | TIBKAT | 2022


    Numerical Analysis of an Optimized Wind Turbine Blade

    Singh, Ravi P. / Kumar, Praveen / Sangha, Gurjeev S. et al. | AIAA | 2022