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RISA Novel Large-Eddy Simulation-Based Process for NOx Emission Assessment in a Premixed Swirl Stabilized Combustion System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new computational fluid dynamics (CFD) approach for the assessment of NOx emission. The methodology is validated against the experimental data of a heavy-duty gas turbine annular combustor. Since the ...
A Dynamic Thickening Strategy for High-Fidelity Computational Fluid Dynamics Analyses of Multi-Regime Combustion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, a dynamic thickening strategy for dynamic thickened flame model for large eddy simulations (DTFLES) application to multi-regime combustion is proposed. The main idea lies in using the numerical solution of ...
Assessment of a Conjugate Heat Transfer Method on an Effusion Cooled Combustor Operated With a Swirl Stabilized Partially Premixed Flame
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Computational fluid dynamics (CFD) plays a crucial role in the design of cooling systems in gas turbine combustors due to the difficulties and costs related to experimental measurements performed in pressurized reactive ...
CO Emission Modeling in a Heavy Duty Annular Combustor Operating With Natural Gas
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper summarizes the development of a large-eddy simulation (LES)-based approach for the prediction of CO emission in an industrial gas turbine combustor. Since the operating point of the modern combustors is really ...
Development of a Virtual Chemistry Reaction Mechanism for H2/CH4 Turbulent Combustion Modelling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The identification of the combustion model is always guided by the compromise between accuracy and computational cost. While species transport models offer accuracy, their computational cost requirement can become prohibitive, ...
Development of a Virtual Chemistry Reaction Mechanism for H2/CH4 Turbulent Combustion Modelling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The identification of the combustion model is always guided by the compromise between accuracy and computational cost. While species transport models offer accuracy, their computational cost requirement can become prohibitive, ...
Numerical Analysis of Sealing Flows in Gas Turbines Using RANS and Large Eddy Simulation Approaches
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. The flow field developing inside the stator–rotor disc cavities of gas turbines is characterized by highly complex and unsteady behavior driven by strong vortical structures and transient interactions. These ...
The Control of Hydrogen–Air Ignition Dynamics to Prevent Flashback
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. A potential strategy to safely ignite a hydrogen–air mixture is investigated using high-fidelity large eddy simulations (LESs) on an academic burner with a chamber back pressure to mimic the flow blockage ...
Design and Numerical Investigation of a Swirl-Stabilized Hydrogen Burner for Aero Engine Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. In recent years, the potential of hydrogen as an alternative fuel for the decarbonization of the aeronautical sector has been widely recognized in both scientific and industrial combustion communities. Due to its ...
Unsteady Computational Fluid Dynamics Investigation of Effusion Cooling Process in a Lean Burn Aero-Engine Combustor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work describes the main findings of a computational fluid dynamics (CFD) analysis intended to accurately investigate the flow field and wall heat transfer as a result of the mutual interaction between a swirling flow ...