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RISA Novel Active Optimization Approach for Rapid and Efficient Design Space Exploration Using Ensemble Machine Learning
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this work, a novel design optimization technique based on active learning, which involves dynamic exploration and exploitation of the design space of interest using an ensemble of machine learning algorithms, is presented. ...
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 ...
An Automated Machine Learning-Genetic Algorithm Framework With Active Learning for Design Optimization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The use of machine learning (ML)-based surrogate models is a promising technique to significantly accelerate simulation-driven design optimization of internal combustion (IC) engines, due to the high computational cost of ...
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, ...
Assessment of Machine Learning Wall Modeling Approaches for Large Eddy Simulation of Gas Turbine Film Cooling Flows: An a Priori Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this work, a priori analysis of machine learning (ML) strategies is carried out with the goal of data-driven wall modeling for large eddy simulation (LES) of gas turbine film cooling flows. High-fidelity flow datasets ...
Multidimensional Numerical Modeling of Combustion Dynamics in a Non-Premixed Rotating Detonation Engine With Adaptive Mesh Refinement
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present work, a novel computational fluid dynamics (CFD) methodology was developed to simulate full-scale non-premixed rotating detonation engines (RDEs). A unique feature of the modeling approach was the incorporation ...
Large-Eddy Simulation Study of Flow and Combustion Dynamics in a Full-Scale Hydrogen–Air Rotating Detonation Combustor-Stator Integrated System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present work, a first-of-its-kind three-dimensional (3D) large-eddy simulation (LES) study is conducted to numerically investigate the combustion dynamics as well as aero-thermal phenomena in a full-scale nonpremixed ...
Multidimensional Numerical Simulations of Knocking Combustion in a Cooperative Fuel Research Engine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A numerical approach was developed based on multidimensional computational fluid dynamics (CFD) to predict knocking combustion in a cooperative fuel research (CFR) engine. G-equation model was employed to track the turbulent ...
Numerical Analysis of Fuel Effects on Advanced Compression Ignition Using a Cooperative Fuel Research Engine Computational Fluid Dynamics Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Growing environmental concerns and demand for a better fuel economy are driving forces that motivate the research for more advanced engines. Multi-mode combustion strategies have gained attention for their potential to ...
Numerical Investigation of a Central Fuel Property Hypothesis Under Boosted Spark-Ignition Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present work, a central fuel property hypothesis (CFPH), which states that fuel properties are sufficient to provide an indication of a fuel’s performance irrespective of its chemical composition, was numerically ...