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RISAdjoint-Based Optimization for the Venturi Mixer of A Burner
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The optimization of Venturi mixers in burners is critical for enhancing combustion efficiency and minimizing emissions. In this study, we utilize the adjoint method to analyze and refine the design of a Venturi mixer. Our ...
Prediction of Thermoacoustic Instability and Fluid–Structure Interactions for Gas Turbine Combustor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work simulates a laboratory-scale three-dimensional methane/air burner, which features a bluff body stabilized, lean partially premixed flame experiencing strong limit cycle oscillations. A thin steel liner is installed ...
Expulsion Intensity Monitoring and Modeling in Resistance Spot Welding Based on Electrode Displacement Signals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Weld expulsion is one of the most common welding defects during the resistance spot welding (RSW) process, especially for high strength steels (HSS). In order to control and eventually eliminate weld expulsion in production, ...
A Novel Expulsion Control Strategy With Abnormal Condition Adaptability for Resistance Spot Welding
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Welding expulsion is a common problem in the resistance spot welding (RSW) process, which severely impacts weld quality and surrounding facilities. Existing expulsion control strategies are ineffective for complex and ...
Numerical Simulations of a Lifted Hydrogen Jet Flame Using Flamelet Generated Manifold Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A turbulent lifted H2/N2 jet flame in a vitiating coflow environment is numerically investigated, using the Flamelet generated manifold (FGM) combustion model with large eddy simulations (LES). Due to the hot vitiated ...
Sensitivity of Ensemble Forecast Verification to Model Bias
Publisher: American Meteorological Society
Abstract: AbstractThis study demonstrates how model bias can adversely affect the quality assessment of an ensemble prediction system (EPS) by verification metrics. A regional EPS [Global and Regional Assimilation and Prediction ...
Stress-Blended Eddy Simulation/Flamelet Generated Manifold Simulation of Film-Cooled Surface Heat Transfer and Near-Wall Reaction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate numerical prediction of surface heat transfer in the presence of film cooling within aero-engine sub-components, such as blade effusion holes and combustor liners, has long been a goal of the aero-engine industry. ...
Large Eddy Simulation of Ammonia–Hydrogen Nonpremixed Flames Stabilized on a Bluff Body Burner
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The demand for carbon-free fuels such as ammonia (NH3) and hydrogen (H2) has been growing rapidly due to stricter environmental policies on carbon emissions. Since ammonia is easier to store and transport, it is considered ...
Comparative Study on Perception of Causes for Construction Task Delay in China and the United States
Publisher: ASCE
Abstract: Rapidly growing construction markets in China and the United States have provided opportunities for contractors to venture into foreign industries. To help project managers understand the fundamental difference in culture ...
Improving Weldability of Press Hardened Steel Through Combining Stepped Current Pulse and Magnetically Assisted Resistance Spot Welding Process
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Press-hardened steel (PHS), characterized by its extremely high strength, has wide applications in vehicle body manufacturing as an innovative lightweight material. Nevertheless, the poor weldability of PHS results in poor ...