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RISUncertainty Quantification on the Cooling Performance of a Transonic Turbine Vane With Upstream Endwall Misalignment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: With increasing aerodynamic and thermal loads, film cooling has been a popular technology integrated into the design of the modern gas turbine vane endwall, especially for the first-stage vane endwall. A staggering amount ...
The Effects of Axisymmetric Convergent Contouring and Blowing Ratio on Endwall Film Cooling and Vane Pressure Side Surface Phantom Cooling Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To reduce the intensity of endwall secondary flow, the axisymmetric convergent contoured endwall is commonly designed in the first nozzle guide vane (NGV) passage of the real gas turbine engines. This endwall contouring ...
Uncertainty Analysis of Laser Drilling Imperfection and Impacts on the Cooling Performance of a Transonic Turbine Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To ensure the durability and reliability of gas turbine, film cooling has been integrated into the design of the modern gas turbine vane endwall, especially for the first-stage vane endwall. Percussion laser drilling has ...
Effects of Hole Blockage on Endwall Film Cooling and Vane Phantom Cooling Performances of a Transonic Turbine Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Although the thermal-barrier coating (TBC) can protect the gas turbine components from the hot mainstream gas, it is not uncommon that the TBC partially blocks the film cooling holes during the spraying process. The film ...
Experimental Study on the Endwall Aerothermal Performance of Turbine Cascades in a Novel Transient Test Facility
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Linear turbine cascades have been widely used to conduct fundamental and applied investigations, but only a few transient test facilities with the linear turbine cascade are available in the open literature. A novel transient ...
Effects of Upstream Step Geometries on Endwall Film Cooling and Phantom Cooling Performances of a Transonic Turbine Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In gas turbine engines, the endwall misalignment (step geometries with various step heights) commonly exists between the combustor exit and the first nozzle guide vane endwall, due to assembly error, metal corrosion, and ...
Experimental Study of the Endwall Heat Transfer of a Transonic Nozzle Guide Vane With Upstream Jet Purge Cooling Part 2—Effect of Combustor-Nozzle Guide Vane Misalignment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A misalignment between the combustor exit and the nozzle guide vane (NGV) platform commonly exists due to manufacturing tolerances and thermal transience. This study investigated, experimentally and computationally, the ...
Experimental Study of the Endwall Heat Transfer of a Transonic Nozzle Guide Vane With Upstream Jet Purge Cooling Part 1—Effect of Density Ratio
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Nozzle guide vane (NGV) platforms often use complex cooling schemes to mitigate the ever-increasing thermal loads on endwall. Understanding the effect of advanced cooling schemes amid the highly complex three-dimensional ...
Endwall Heat Transfer and Cooling Performance of a Transonic Turbine Vane With Upstream Injection Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flow fields near the turbine vane endwall region are very complicated due to the presence of high three-dimensional passage vortices and endwall secondary flows. This makes it challenging for the endwall to be effectively ...