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RISDischarge Coefficients of Cooling Holes With Radiused and Chamfered Inlets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The flow of cooling air within the internal passages of gas turbines is controlled and metered using orifices formed of holes in disks and casings. The effects of inlet radiusing and chamfering ...
Discharge Coefficient of Turbine Cooling Holes: A Review
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Published information on the discharge coefficient of film cooling holes is classified in terms of the hole geometry, the external flow conditions at inlet and outlet, and the method of ...
Effect of Crossflows on the Discharge Coefficient of Film Cooling Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The strongest flow parameter governing the film cooling effectiveness provided by a row of holes is the blowing rate. Precise setting of the blowing rate at the design stage requires accurate ...
Effects of the Condition of the Approach Boundary Layer and of Mainstream Pressure Gradients on the Heat Transfer Coefficient on Film-Cooled Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes an investigation of the sensitivity of the heat transfer coefficient under the film to the state of the approach boundary layer for injection through a row of holes on ...
The Effect of Density Ratio on the Heat Transfer Coefficient From a Film-Cooled Flat Plate
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of density ratio of cooling films on the heat transfer coefficient on a flat plate is investigated using a heat-mass transfer analogy. The experimental technique employed uses a ...
Effect of Acceleration on the Heat Transfer Coefficient on a Film-Cooled Surface
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Results are presented of an experimental investigation into the influence of mainstream acceleration on the heat transfer coefficient downstream of injection through a row of 35 deg holes in a ...
Discharge Coefficients of Holes Angled to the Flow Direction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the cooling passages of gas turbine blades, branches are often angled to the direction of the internal flow. This is particularly the case with film cooling holes. Accurate knowledge of ...
A Comparison of Simple Models of Turbulent Droplet Diffusion Suitable for Use in Computations of Spray Flames
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An exact analysis of the diffusion of droplets in turbulent flow, taking account of the random nature of the flow and the range of length and time scales, is very involved and the equations ...
Effects of Cooling Films on the Heat Transfer Coefficient on a Flat Plate With Zero Mainstream Pressure Gradient
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The influence of injection of cooling films through a row of holes on the heat transfer coefficient on a flat plate is investigated for a range of mass flux ratio using a heat-mass transfer ...
The Film Cooling Effectiveness of Double Rows of Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The film cooling effectiveness provided by two rows of holes separated by a range of distances has been studied experimentally using a mass transfer technique. The blowing rates at the two ...