Computational Simulation of Cylindrical Film Hole with Jet Pulsation on Flat Plates

Kartuzova, Olga; Dănilă, D. M.; Ibrahim, Mounir B.; Volino, Ralph J.

doi:10.2514/1.40299

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…The film effectiveness results presented in the research 12 showed that the effectiveness of a pulsating flow was lower at VR of 1 and 2, pulsating frequency 10 Hz and duty cycle 50% than a continuous film flow. When the blowing ratio was 0.5 and 1.5, and the Strouhal number ranged from 0.0119 to 1.0, the film cooling of the pulsating plate was simulated through the realizable k-ε turbulence model 13 . The research results showed that the performance of the pulse jet depended largely on the geometry and blowing ratio.…”

Section: Introductionmentioning

confidence: 99%

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Investigations on the effect of different influencing factors on film cooling effectiveness under the injection of synthetic coolant

Chang

Duan

et al. 2021

Sci Rep

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By combining the synthetic jet and film cooling, the incident cooling flow is specially treated to find a better film cooling method. Numerical simulations of the synthetic coolant ejected are carried out for analyzing the cooling performance in detail, under different blowing ratios, hole patterns, Strouhal numbers, and various orders of incidence for the two rows of holes. By comparing the flow structures and the cooling effect corresponding to the synthetic coolant and the steady coolant fields, it is found that within the scope of the investigations, the best cooling effect can be obtained under the incident conditions of an elliptical hole with the aspect ratio of 0.618, the blow molding ratio of 2.5, and the Strouhal number St = 0.22. Due to the strong controllability of the synthetic coolant, the synthetic coolant can be controlled through adjusting the frequency of blowing and suction, so as to change the interaction between vortex structures for improving film cooling effect in turn. As a result, the synthetic coolant ejection is more advisable in certain conditions to achieve better outcomes.

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Section: Introductionmentioning

confidence: 99%

“…number ranged from 0.0119 to 1.0, the film cooling of the pulsating plate was simulated through the realizable k-ε turbulence model 13 . The research results showed that the performance of the pulse jet depended largely on the geometry and blowing ratio.…”

mentioning

confidence: 99%