Investigation of Effect of Unsteady Interaction on Turbine Blade Film Cooling

Li, Zhou; Fan, Hong-Zhou; Zhang, Xin; Yuan-hu, Cai

doi:10.1080/19942060.2011.11015388

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…This solver has been well verified by a number of industrial applications (Safikhani et al, 2011;Zhou et al, 2011). A finite volume method with the second-order centered scheme is employed in this solver for space discretization.…”

Section: Methodsmentioning

confidence: 99%

Numerical Simulations of Imperfect Bifurcation of Jet in Crossflow

Wang

Liang

et al. 2012

Engineering Applications of Computational Fluid Mechanics

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This paper investigates the flow structure nearby a rectangular cooling hole on a flat plate by numerical simulations and topological analysis. The velocity ratio ranges from 0.5 to 1.5. Steady Reynolds-averaged NavierStokes simulations and unsteady detached eddy simulations are performed based on the Spalart-Allmaras turbulence model. The time-averaged velocity profiles in the central plane are verified by grid convergence study and comparison with the experimental data. The discussions mainly focus on the effect of the velocity ratio on the vortex structure and the stability of the jet-in-crossflow (JICF) system. The simulation results show that a bifurcation of the vortex system exists with respect to the velocity ratio. The averaged flow goes from a symmetric structure to an asymmetric structure on this bifurcation. The detached eddy simulation results show that both the symmetric vortex system and the asymmetric vortex system with different velocity ratios are stable.

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Section: Methodsmentioning

confidence: 99%

Numerical Simulations of Imperfect Bifurcation of Jet in Crossflow

Wang

Liang

et al. 2012

Engineering Applications of Computational Fluid Mechanics

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“…Bazdidi-Tehrani et al [20] evaluated the first-moment closure model applicable to film cooling flow and heat transfer computations regarding a single row of cylindrical holes. Zhou et al [21] investigated numerically the influence of the unsteady interaction between the rotor and stator on the film cooling effectiveness of the flow field surrounding the cooling holes on moving blades. Results showed that the unsteady interaction between the stator wake and the cooling jet flow becomes stronger in the case of larger blowing ratio under the same stator wake condition.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rotation on Flow Field and Film Cooling Effectiveness in Film-Cooled Turbine Rotors

Zhu¹,

Liu²,

Yuan³

2014

International Journal of Turbo &Amp; Jet-Engines

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Experimental and numerical investigations of flow field in a film-cooled turbine model under stationary and rotating conditions in a low-speed wind tunnel are conducted. The effects of different blowing ratios (M = 1.5, 2) on the flow field are studied. Results revealed a secondary flow near the blade surface in the wake region behind the jet hole. Compared with the stationary turbine, there exists centrifugal force and Coriolis force in the flow field of the rotating turbine, and these forces cause changes in the flow field in the rotating turbine. The effect of rotation on the flow field and film cooling effectiveness in the Y-Z planes on the pressure side is stronger than on the suction side, and results in lower film cooling effectiveness on the pressure surface of the rotating turbine blade compared with the stationary turbine. As the blowing ratio increases, the secondary flow in the wake region will become stronger, thereby enlarging the range of the wake.

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Analysis of the thermal insulation performance of turbine blade thermal barrier coatings considering inlet non-uniformity

Liu,

Yan,

et al. 2024

Case Studies in Thermal Engineering

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Investigation of Effect of Unsteady Interaction on Turbine Blade Film Cooling

Cited by 5 publications

References 8 publications

Numerical Simulations of Imperfect Bifurcation of Jet in Crossflow

Numerical Simulations of Imperfect Bifurcation of Jet in Crossflow

Effect of Rotation on Flow Field and Film Cooling Effectiveness in Film-Cooled Turbine Rotors

Analysis of the thermal insulation performance of turbine blade thermal barrier coatings considering inlet non-uniformity

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