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Computational study of hole shape effect on film cooling performance [PDF]
, 2011 Film cooling effectiveness has been studied by using a computational approach based on solving the Reynolds-averaged Navier–Stokes equations. A wind tunnel test configuration is considered with a total of four cooling hole geometries as a cylindrical ...
Yao, Jun, Yao, Yufeng
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Processes, 2020 This study investigated the effect of adding two sister holes placed downstream the main hole on film cooling by employing large eddy simulation. Here, film-cooling flow fields from a triple-hole system inclined by 35° to a flat plate at blowing ratios ...
S. Baek, Joon Ahn
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Propulsion and Power Research, 2013 The film cooling mechanism and characteristics of a row of cylindrical holes with branched jet injections were investigated by numerical simulation. Three geometries for the branched jet injection holes and four blowing ratios were considered.
Yu Yao, Jingzhou Zhang, Yang Yang
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Propulsion and Power Research, 2012 In order to study the effect of cross-flow directions of an internal coolant on film cooling performance, the discharge coefficients and film cooling effectiveness with one inlet and double outlet hole injections were simulated.
Guangchao Li +4 more
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Energies, 2021 The forward expansion hole improves the film cooling effectiveness by reducing the penetration of the coolant jet into the main flow compared to the cylindrical holes.
Seung Il Baek, Jaiyoung Ryu, Joon Ahn
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Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane
Engineering Applications of Computational Fluid Mechanics, 2022 Based on numerical simulations, the heat transfer and flow field of a turbine vane are analyzed and the film cooling is improved. The optimization objective is increasing the overall cooling effectiveness with cascade pressure loss factors staying almost
Mingrui Wang +5 more
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Simulation and experimental study of double holes film cooling [PDF]
, 2012 In the modern gas turbine, film cooling has been widely used to provide thermal protection for the external surface of the gas turbine blades. Numerous number of geometrical arrangement film cooling have been presented for the past 50 years.
Abdul Rahim, Erween +3 more
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Effects of plasma actuation and hole configuration on film cooling performance
Propulsion and Power Research, 2023 In this paper, plasma actuators are arranged asymmetrically downstream the wall to improve film cooling performance. Effects of blowing ratio, hole configuration and applied voltage on flow characteristics and film cooling effectiveness were investigated
Jie Sun +4 more
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Numerical study of effusion cooling on an adiabatic flat plate
Propulsion and Power Research, 2013 The present study aims to investigate the effectiveness of effusion film cooling on an adiabatic flat plate. Cylindrical holes of 30° inclination are used for supplying cold air to the hot primary flow. A non-dimensional parameter called the film cooling
Reaz Hasan, Agin Puthukkudi
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Machines, 2023 The jet always sweeps to the leftmost and rightmost points in the sweeping jet and film composite cooling (SJF) process, resulting in a different coolant flow in each film hole. The film can not easily cover the outer surface evenly under the scouring of
Xiangcan Kong +5 more
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