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Secondary Flows and Loss Caused by Blade Row Interaction in a Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A study of the three-dimensional stator-rotor interaction in a turbine stage is presented. Experimental data reveal vortices downstream of the rotor which are stationary in the absolute ...
An Accelerated 3D Navier–Stokes Solver for Flows in Turbomachines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new three-dimensional Navier–Stokes solver for flows in turbomachines has been developed. The new solver is based on the latest version of the Denton codes but has been implemented to run ...
Influence of Sweep on Axial Flow Turbine Aerodynamics at Midspan
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Sweep, when the stacking axis of the blade is not perpendicular to the axisymmetric streamsurface in the meridional view, is often an unavoidable feature of turbine design. Although a high ...
The Influence of Sweep on Axial Flow Turbine Aerodynamics in the Endwall Region
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Sweep, when the stacking axis of the blade is not perpendicular to the axisymmetric stream surface in the meridional view, is often an unavoidable feature of turbine design. In a previously ...
Improving the Performance of a Turbine With Low Aspect Ratio Stators by Aft-Loading
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experimental data and numerical simulations are presented from a research turbine with low aspect ratio nozzle guide vanes (NGVs). The combined effects of mechanical and aerodynamic constraints ...
Estimating the Loss Associated With Film Cooling for a Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A methodology is presented to allow designers to estimate the penalty for turbine efficiency associated with film cooling. The approach is based on the control volume analysis of Hartsel and ...
The Importance of Shroud Leakage Modeling in Multistage Turbine Flow Calculations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Three-dimensional steady multistage calculations, using the mixing plane approach, are compared with experimental measurement in a low-speed three-stage model turbine. The comparisons are made with ...
An Experimental and Computational Study of the Formation of a Streamwise Shed Vortex in a Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Shear layers shed by aircraft wings roll up into vortices. A similar, though far less common, phenomenon can occur in the wake of a turbomachine blade. This paper presents experimental data ...
The Interaction of Turbine Inter-Platform Leakage Flow With the Mainstream Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Individual nozzle guide vanes (NGV’s) in modern aeroengines are often cast as a single piece with integral hub and casing endwalls. When in operation, there is a leakage flow through the ...
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