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RISAssessing Fuel Property Effects on Cavitation and Erosion Propensity Using a Computational Fuel Screening Tool
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To advance compression ignition combustion strategies, researchers have evaluated fuel property effects and their impact on achieving higher efficiencies and lower emissions levels relative to current capabilities. Within ...
Large Eddy Simulation of Lean Mixed-Mode Combustion Assisted by Partial Fuel Stratification in a Spark-Ignition Engine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Partial fuel stratification (PFS) is a promising fuel injection strategy to improve the stability of lean combustion by applying a small amount of pilot injection right before spark timing. Mixed-mode combustion, which ...
Numerical Analysis of Combustion Dynamics in a Full-Scale Rotating Detonation Rocket Engine Using Large Eddy Simulations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Large eddy simulations (LESs) using detailed chemistry and leveraging adaptive mesh refinement (AMR) are performed to gain insights into the combustion dynamics within a full-scale methane–oxygen nonpremixed rotating ...
Collaborations that Forge the Future
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A recent research initiative promoted with federal funding provides an excellent example of how ASME continues to push the boundary toward cleaner, more efficient transportation.
Large Eddy Simulation of an n Dodecane Spray Flame Under Different Ambient Oxygen Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An ndodecane spray flame was simulated using a dynamic structure largeeddy simulation (LES) model coupled with a detailed chemistry combustion model to understand the ignition processes and the quasisteady state flame ...
Comparison of Mixture and Multifluid Models for In Nozzle Cavitation Prediction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fuel injectors often feature cavitation because of large pressure gradients, which in some regions lead to extremely low pressures. The main objective of this work is to compare the prediction capabilities of two multiphase ...
Direct Numerical Simulation of Partial Fuel Stratification Assisted Lean Premixed Combustion for Assessment of Hybrid G-Equation/Well-Stirred Reactor Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Partial fuel stratification (PFS) is a promising fuel injection strategy to stabilize lean premixed combustion in spark-ignition (SI) engines. PFS creates a locally stratified mixture by injecting a fraction of the fuel, ...
Computational Fluid Dynamics Simulation of Gasoline Compression Ignition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Gasoline compression ignition (GCI) is a low temperature combustion (LTC) concept that has been gaining increasing interest over the recent years owing to its potential to achieve diesellike thermal efficiencies with ...
Using Machine Learning to Analyze Factors Determining Cycle-to-Cycle Variation in a Spark-Ignited Gasoline Engine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this work, we have applied a machine learning (ML) technique to provide insights into the causes of cycle-to-cycle variation (CCV) in a gasoline spark-ignited (SI) engine. The analysis was performed on a set of large ...
Numerical Prediction of Cyclic Variability in a Spark Ignition Engine Using a Parallel Large Eddy Simulation Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cycle-to-cycle variability (CCV) is detrimental to IC engine operation and can lead to partial burn, misfire, and knock. Predicting CCV numerically is extremely challenging due to two key reasons. First, high-fidelity ...