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Assessment of the Cold-Wire Resistance Thermometer for High-Speed Turbomachinery Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper first describes the fundamentals of cold-wire resistance thermometry. The transfer functions with and without wire-prong heat conduction effects are discussed and a new method for the ...
Effect of the Hub Endwall Cavity Flow on the Flow-Field of a Transonic High-Pressure Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In high-pressure turbines, a small amount of cold flow is ejected at the hub from the cavity that exists between the stator and the rotor disk. This prevents the ingestion of hot gases into ...
Unsteady Rotor Heat Transfer in a Transonic Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This experimental investigation reports the convective heat transfer coefficient around the rotor of a transonic turbine stage. Both time-resolved and time-averaged aspects are addressed. The ...
Application of Hot-Wire Anemometry in a Blow-Down Turbine Facility
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to test HP turbine stages under engine representative conditions on a heat transfer point of view, blow-down test rigs are often used. In these rigs the evolution of gas temperature, ...
Investigation of the Unsteady Rotor Aerodynamics in a Transonic Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper focuses on the unsteady pressure field measured around the rotor midspan profile of the VKI Brite transonic turbine stage. The understanding of the complex unsteady flow field is ...
Investigation of the Flow Field Downstream of a Turbine Trailing Edge Cooled Nozzle Guide Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A trailing edge cooled low aspect ratio transonic turbine guide vane is investigated in the VKI Compression Tube Cascade Facility at an outlet Mach number M 2, is = 1.05 and a coolant flow ...
Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel ...
Unsteady Heat Transfer in Stator–Rotor Interaction by Two-Equation Turbulence Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A transonic turbine stage is computed by means of an unsteady Navier–Stokes solver. A two-equation turbulence model is coupled to a transition model based on integral parameters and an extra ...