Search
CSV
RISTheoretical Model to Determine Effect of Ingress on Turbine Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Sealing air is used in gas turbines to reduce the amount of hot gas that is ingested through the rim seals into the wheelspace between the turbine disk and its adjacent stationary casing. The sealing air attaches itself ...
A Model of Mass and Heat Transfer for Disc Temperature Prediction in Open Compressor Cavities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate prediction of heat transfer in compressor cavities is crucial to the design of efficient and reliable aircraft engines. The heat transfer affects the thermal expansion of the compressor rotor and, in turn, the tip ...
Influence of Flow Coefficient on Ingress Through Turbine Rim Seals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rim seals are critical in terms of limiting the temperature of highly stressed engine components but function with a penalty to the power output and contribute to entropy gain stemming from mixing losses in the turbine. ...
Influence of Temperature Distribution on Radial Growth of Compressor Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: For the next generation of aero-engines, manufacturers are planning to increase the overall compressor pressure ratio from the existing values around 50:1 to values of 70:1. The requirement to control the tight clearances ...
Fluid Dynamics of Turbine Rim Seal Structures: A Physical Interpretation Using URANS
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Unsteady Reynolds-averaged Navier–Stokes modeling (URANS) is a valuable and cost-effective tool for computational fluid dynamics (CFD), including the investigation of mainstream–cavity interaction in turbines. Despite the ...
Measurement of Heat Transfer and Flow Structures in a Closed Rotating Cavity
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Buoyancy-induced flow occurs inside the rotating compressor cavities of gas turbines. These cavities are usually open at the inner radius, but in some industrial gas turbines, they are effectively closed. This paper presents ...
Conjugate Modeling of a Closed Co-Rotating Compressor Cavity
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Robust methods to predict heat transfer are vital to accurately control the blade-tip clearance in compressors and the radial growth of the disks to which these blades are attached. Fundamentally, the flow in the cavity ...
Experimental Measurements of Ingestion Through Turbine Rim Seals—Part I: Externally Induced Ingress
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes a new research facility which experimentally models hot gas ingestion into the wheelspace of an axial turbine stage. Measurements of the CO2 gas concentration in the rimseal region and inside the cavity ...
Effect of Ingestion on Temperature of Turbine Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes experimental results from a research facility which experimentally models hotgas ingress into the wheelspace of an axial turbine stage with an axialclearance rim seal. Thermochromic liquid crystal (TLC) ...
Experimental Measurements of Ingestion Through Turbine Rim Seals—Part II: Rotationally Induced Ingress
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Part I of this twopart paper presented experimental results for externallyinduced (EI) ingress, where the ingestion of hot gas through the rim seal into the wheelspace of a gas turbine is controlled by the circumferential ...