Abstract: Abstract. To keep metal temperature at allowable levels in modern gas turbine engines, both internal and external (film) cooling is necessary, which is represented by an overall cooling effectiveness. Previous studies ...

Abstract: The boundary layer on the endwall of an axial turbomachine passage is influenced by streamwise and crossstream pressure gradients, as well as a large streamwise vortex, that develop in the passage. These influences distort ...

Abstract: Turbine blade components in an engine are typically designed with gaps between parts due to manufacturing, assembly, and operational considerations. Coolant is provided to these gaps to limit the ingestion of hot combustion ...

Abstract: Double-walled liners consisting of impingement and effusion cooling are commonly used to cool gas turbine combustor chambers. Engine ingestion of particulates such as dirt, sand, or ash leads to particulate deposition and ...

Abstract: Designing turbine components for maximum aerodynamic performance with adequate cooling is a critical challenge for gas turbine engineers, particularly at the endwall of a turbine, due to complex secondary flows. To complicate ...

Abstract: Abstract. Ceramic matrix composites (CMCs) can enable more efficient gas turbines relative to traditional nickel alloys, resulting from enabling higher turbine entry temperatures that, in turn, benefit cycle performance. ...

Abstract: The elevated flow temperatures and pressures exiting gas turbine combustors affect the efficiency and durability of the high-pressure turbine stage. Understanding the effects that result from the upstream dilution and ...

Abstract: Abstract. Ingestion of particulate within a gas turbine engine leads to undesirable consequences such as erosion, hot spots, and cooling hole blockages. These concerns are prevalent in the combustor wall region that commonly ...

Abstract: Ceramic matrix composite (CMC) components enable high turbine entry temperatures, which can lead to improved efficiencies in gas turbines. Implementing film cooling over CMC components, similar to how it is employed for ...

Abstract: Ceramic matrix composites (CMCs) are quickly becoming more prevalent in the design of gas turbines due to their advantageous weight and thermal properties. While there are many advantages, the CMC surface morphology differs ...