Unsteady film cooling with imposed nonuniform pulsations of the main flow

Izmodenova, T. Yu.; Kortikov, N. N.; Кузнецов, Н. Б.

doi:10.1007/s11510-008-0007-1

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Based on the investigation of Izmodenova 27 et al on the dual-row incident cooling flow, this manuscript proposes two new cases, which have a same arrangement and different incident function. The arrangement of staggered double rows is used in two cases.…”

Section: Resultsmentioning

confidence: 99%

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: Resultsmentioning

confidence: 99%