Volume 7: Turbomachinery, Parts A, B, and C 2010
DOI: 10.1115/gt2010-23461
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Numerical Investigation of the Influence of Real World Blade Profile Variations on the Aerodynamic Performance of Transonic Nozzle Guide Vanes

Abstract: This paper addresses the issue of aerodynamic consequences of small variations in airfoil profile. A numerical comparison of flow field and cascade pressure losses for two representative repaired profiles and a reference new vane were made. Coordinates for the three airfoil profiles were obtained from the nozzle guide vanes of refurbished turboshaft engines using 3D optical scanning and digital modeling. The repaired profiles showed differences in geometry in comparison with the new vane, particularly near the… Show more

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“…At the beginning of this century, By the direct Monte Carlo simulations (MCS), Garzon et al (Garzon and Darmofal, 2003) successfully evaluated the impact of geometric variability on the aerodynamic performance of compressor blades, releasing the researchers from time-consuming and high-cost experiments. Edwards et al (Edwards et al, 2011) numerically investigated the influence of blade geometric variations on the aerodynamic performance of a transonic nozzle guide vane. Generally, using the direct MCS, usually a large number of samples are necessary.…”
Section: Introductionmentioning
confidence: 99%
“…At the beginning of this century, By the direct Monte Carlo simulations (MCS), Garzon et al (Garzon and Darmofal, 2003) successfully evaluated the impact of geometric variability on the aerodynamic performance of compressor blades, releasing the researchers from time-consuming and high-cost experiments. Edwards et al (Edwards et al, 2011) numerically investigated the influence of blade geometric variations on the aerodynamic performance of a transonic nozzle guide vane. Generally, using the direct MCS, usually a large number of samples are necessary.…”
Section: Introductionmentioning
confidence: 99%