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RISSt and cf Augmentation for Real Turbine Roughness With Elevated Freestream Turbulence
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experimental measurements of skin friction (cf) and heat transfer (St) augmentation are reported for low speed flow over turbine roughness models. The models were scaled from surface measurements ...
Separated Flow Transition on an LP Turbine Blade With Pulsed Flow Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flow measurements were made on a highly loaded low pressure turbine blade in a low-speed linear cascade facility. The blade has a design Zweifel coefficient of 1.34 with a peak pressure ...
The Effect of Real Turbine Roughness With Pressure Gradient on Heat Transfer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experimental measurements of heat transfer (St) are reported for low speed flow over scaled turbine roughness models at three different freestream pressure gradients: adverse, zero (nominally), ...
The Effect of Element Thermal Conductivity on Turbulent Convective Heat Transfer From Rough Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The discrete-element model for flows over rough surfaces considers the heat transferred from a rough surface to be the sum of the heat convected from the flat surface and the heat convected ...
Turbine Separation Control Using Pulsed Vortex Generator Jets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The application of pulsed vortex generator jets to control separation on the suction surface of a low-pressure turbine blade is reported. Blade Reynolds numbers in the experimental, linear turbine ...
The Fluid Dynamics of LPT Blade Separation Control Using Pulsed Jets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects of pulsed vortex generator jets on a naturally separating low-pressure turbine boundary layer have been investigated experimentally. Blade Reynolds numbers in the linear turbine cascade ...
The Application of Flow Control to an Aft-Loaded Low Pressure Turbine Cascade With Unsteady Wakes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The synchronous application of flow control in the presence of unsteady wakes was studied on a highly loaded low pressure turbine blade. At low Reynolds numbers, the blade exhibits a nonreattaching ...
Deposition Near Film Cooling Holes on a High Pressure Turbine Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Deposition on film-cooled turbine components was studied in an accelerated test facility. The accelerated deposition facility seeds a natural-gas burning combustor with finely ground coal ash ...
Effect of Hole Spacing on Deposition of Fine Coal Flyash Near Film Cooling Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Particulate deposition experiments were performed in a turbine accelerated deposition facility to examine the nature of flyash deposits near film cooling holes. Deposition on both bare metal and ...
Evolution of Surface Deposits on a High-Pressure Turbine Blade—Part I: Physical Characteristics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Turbine blade coupons with three different surface treatments were exposed to deposition conditions in an accelerated deposition facility. The facility simulates the flow conditions at the inlet ...