Unsteady Wake Effect on Film Cooled Rotating Blade

Ling Zhang; Shan Ru Wang; Min Lv

doi:10.4028/www.scientific.net/AMR.816-817.985

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 816-817Unsteady Wake Effect on Film Cooled Rotating Blade

Unsteady Wake Effect on Film Cooled Rotating Blade

Abstract:

Vane-wake unsteady characteristics and its effects on rotor blade leading-edge were investigated with SST k-ω turbulence model in this paper. Conditions of different rotated speed (500rpm, 1000rpm, and 2000rpm), rotor blade surface static pressure and heat transfer coefficient distributions were obtained from spectrum analysis of rotor surface lift and drag coefficient under corresponding conditions. Results show that: Along with the increase of speed, wake vortex shedding frequency and energy entropy around rotor blade flow field increase, which leads to relatively high energy loss; pressure surface of rotor blade static pressure reduces with increasing speed, whereas, suction surface static pressure increases, and overall heat transfer performance of rotor blade surface increases.

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Periodical:

Advanced Materials Research (Volumes 816-817)

Pages:

985-988

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.816-817.985

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Online since:

September 2013

Authors:

Ling Zhang, Shan Ru Wang, Min Lv

Keywords:

Film Cooling, Numerical Simulation, Unsteady Wake

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References

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