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Numerical Investigation on the Effect of Rotation and Holes Arrangement in Cold Bridge-Type Impingement Cooling Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work presents the results of a numerical analysis performed on a gas turbine leading edge cooling system. The investigation was carried out in order to provide a detailed interpretation of the outcomes of a parallel ...
Numerical Characterization of Pressure Drop Across the Manifold of Turbine Casing Cooling System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An array of jets is an arrangement typically used to cool several gas turbine parts. Some examples of such applications can be found in the impingement cooling systems of turbine blades and vanes or in the turbine blade ...
Numerical Investigations of Pollutant Emissions From Novel Heavy-Duty Gas Turbine Burners Operated With Natural Gas
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A numerical investigation of pollutant emissions of a novel dry low-emissions burner for heavy-duty gas turbine applications is presented. The objective of this work is to develop and assess a robust and cost-efficient ...
Reduced-Order Models for Effusion Modeling in Gas Turbine Combustors
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Effusion cooling represents the state-of-the-art for liner cooling technology in modern combustion chambers, combining a more uniform film protection of the wall and a significant heat sink effect by forced convection ...
Analysis of Swirl Number Effects on Effusion Flow Behavior Using Time-Resolved Particle Image Velocimetry
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The analysis of the interaction between the swirling and cooling flows, promoted by the liner film cooling system, is a fundamental task for the design of turbine combustion chambers since it influences different aspects ...
Development and Validation of a Segregated Conjugate Heat Transfer Procedure on a sCO2 Dry Gas Seal Test Bench
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Carbondioxide at supercritical state shows particularly favorable thermodynamic properties for closed-loop Brayton and Rankine cycles. High density, close to a liquid, and low viscosity, close to a gas, drive to achieve ...
Modeling of Natural Gas Composition Effect on Low NOx Burners Operation in Heavy Duty Gas Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper addresses the impact of natural gas composition on both the operability and emissions of lean premixed gas turbine combustion system. This is an issue of growing interest due to the challenge for gas turbine ...
Numerical Benchmark of Nonconventional RANS Turbulence Models for Film and Effusion Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Over the course of the years, several turbulence models specifically developed to improve the predicting capabilities of conventional twoequations Reynoldsaveraged Navier–Stokes (RANS) models have been proposed. They ...
Film Cooling Modeling for Gas Turbine Nozzles and Blades: Validation and Application
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The design of modern gas turbines cooling systems cannot be separated from the use of computational fluid dynamics (CFD) and the accurate estimation of the effect of film cooling. Nevertheless, a complete modeling of film ...
Experimental Investigation of the Flow Field and the Heat Transfer on a Scaled Cooled Combustor Liner With Realistic Swirling Flow Generated by a Lean Burn Injection System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Leanburn swirl stabilized combustors represent the key technology to reduce NOx emissions in modern aircraft engines. The high amount of air admitted through a leanburn injection system is characterized by very complex ...