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Effects of Surface Deposition, Hole Blockage, and Thermal Barrier Coating Spallation on Vane Endwall Film Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: With the increase in usage of gas turbines for power generation and given that natural gas resources continue to be depleted, it has become increasingly important to search for alternate fuels. ...
Bump and Trench Modifications to Film-Cooling Holes at the Vane-Endwall Junction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The endwall of a first-stage vane experiences high heat transfer and low adiabatic effectiveness levels because of high turbine operating temperatures and formation of leading edge vortices. These ...
Multiple Contacts of Similar Elastic Materials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The contact problem for an elastic body indenting a similar half-space resulting in multiple contacts is important for various applications. In this paper an exact fast numerical method based ...
Numerical Analysis of Double Contacts of Similar Elastic Materials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A fast numerical method based on the Cauchy singular integral equations is presented to determine the contact pressure and extents for the contact of two-dimensional similar isotropic bodies ...
Film-Cooling Flowfields With Trenched Holes on an Endwall
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The leading edge region along the endwall of a stator vane experiences high heat transfer rates resulting from the formation of horseshoe vortices. Typical gas turbine endwall designs include ...
The Effects of Varying the Combustor-Turbine Gap
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To protect hot turbine components, cooler air is bled from the high pressure section of the compressor and routed around the combustor where it is then injected through the turbine surfaces. ...
Effect of Midpassage Gap, Endwall Misalignment, and Roughness on Endwall Film-Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To maintain acceptable turbine airfoil temperatures, film cooling is typically used whereby coolant, extracted from the compressor, is injected through component surfaces. In manufacturing a turbine, ...
Effects of Deposits on Film Cooling of a Vane Endwall Along the Pressure Side
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film cooling is influenced by surface roughness and depositions that occur from contaminants present in the hot gas path, whether that film cooling occurs on the vane itself or on the endwalls ...