Focus of this paper is aerodynamic investigation of tie-boss stabilization devices for extremely long rotor blades. This investigation covered measurements on multiple blade cascades and computational fluid dynamics (CFD) simulation of the flow past these cascades. Conclusions were drawn from results of the measurements and CFD and from the knowledge of prior investigation of the used blade cascade. Main focus of this paper is to describe influence of a tie-boss stabilization device on flow field in interblade channel. Tie-boss with more massive shape proved to cause lesser losses, while tie-boss with a tailored trailing edge showed lesser influence on flow turning.
Aerodynamic Effects of Tie-Boss in Extremely Long Turbine Blades
Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received June 16, 2017; final manuscript received February 19, 2018; published online July 31, 2018. Assoc. Editor: Riccardo Da Soghe.
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Radnic, T., Hála, J., Luxa, M., Šimurda, D., Fürst, J., Hasnedl, D., and Kellner, J. (July 31, 2018). "Aerodynamic Effects of Tie-Boss in Extremely Long Turbine Blades." ASME. J. Eng. Gas Turbines Power. November 2018; 140(11): 112604. https://doi.org/10.1115/1.4040093
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