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Journal Articles

A Variational Autoencoder Model Toward Molecular Structure Representation Learning of Fuels

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Kiran K. Yalamanchi, Pinaki Pal, Balaji Mohan, Abdullah S. AlRamadan, Jihad A. Badra, Yuanjiang Pei
Journal: Journal of Energy Resources Technology, Part A: Sustainable and Renewable Energy
Publisher: ASME
Article Type: Research Papers
J. Energy Res. Technol. Part A. September 2025, 1(5): 052301.
Paper No: JERTA-25-1023
https://doi.org/10.1115/1.4068484
Published Online: May 12, 2025
View Articletitled, A Variational Autoencoder Model Toward Molecular Structure Representation Learning of Fuels
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Journal Articles

Numerical Investigation of Ammonia/n-Heptane Dual-Fuel Spray Flames Using Large Eddy Simulations

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Harsimran Singh, Pinaki Pal, Suresh K. Aggarwal
Journal: Journal of Energy Resources Technology, Part A: Sustainable and Renewable Energy
Publisher: ASME
Article Type: Research Papers
J. Energy Res. Technol. Part A. July 2025, 1(4): 042301.
Paper No: JERTA-25-1022
https://doi.org/10.1115/1.4068053
Published Online: March 24, 2025
View Articletitled, Numerical Investigation of Ammonia/n-Heptane Dual-Fuel Spray Flames Using Large Eddy Simulations
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Proceedings Papers

Large-Eddy Simulations of N-Heptane/Ammonia Dual-Fuel Spray Flames

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Harsimran Singh, Pinaki Pal, Suresh Kumar Aggarwal
Proc. ASME. ICEF2024, ASME 2024 ICE Forward Conference, V001T06A016, October 20–23, 2024
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2024-141693
https://doi.org/10.1115/ICEF2024-141693
View Paper titled, Large-Eddy Simulations of N-Heptane/Ammonia Dual-Fuel Spray Flames
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Topics: Combustion, Flames, Fuels, Heptane, Large eddy simulation, Sprays
Proceedings Papers

Development of a Variational Autoencoder Model for Fuel Design

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Kiran K. Yalamanchi, Pinaki Pal, Balaji Mohan, Abdullah S. AlRamadan, Jihad A. Badra, Yuanjiang Pei
Proc. ASME. ICEF2024, ASME 2024 ICE Forward Conference, V001T02A025, October 20–23, 2024
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2024-141660
https://doi.org/10.1115/ICEF2024-141660
View Paper titled, Development of a Variational Autoencoder Model for Fuel Design
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Topics: Design, Fuels
Journal Articles

Large-Eddy Simulation Study of Flow and Combustion Dynamics in a Full-Scale Hydrogen–Air Rotating Detonation Combustor-Stator Integrated System

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Pinaki Pal, James Braun, Yiqing Wang, Venkat Athmanathan, Guillermo Paniagua, Terrence R. Meyer
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2025, 147(3): 031002.
Paper No: GTP-24-1423
https://doi.org/10.1115/1.4066365
Published Online: October 3, 2024
View Articletitled, Large-Eddy Simulation Study of Flow and Combustion Dynamics in a Full-Scale Hydrogen–Air Rotating Detonation Combustor-Stator Integrated System
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Topics: Combustion, Combustion chambers, Dynamics (Mechanics), Explosions, Flow (Dynamics), Hydrogen, Nozzle guide vanes, Pressure, Stators, Temperature
Proceedings Papers

Numerical Study of Flow and Combustion Dynamics in a Hydrogen-Air Rotating Detonation Combustor-Stator Integrated System

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Pinaki Pal, James Braun, Yiqing Wang, Venkat Athmanathan, Guillermo Paniagua, Terrence R. Meyer
Proc. ASME. GT2024, Volume 3B: Combustion, Fuels, and Emissions, V03BT04A059, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129058
https://doi.org/10.1115/GT2024-129058
View Paper titled, Numerical Study of Flow and Combustion Dynamics in a Hydrogen-Air Rotating Detonation Combustor-Stator Integrated System
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Topics: Combustion, Combustion chambers, Dynamics (Mechanics), Explosions, Flow (Dynamics), Hydrogen, Integrated systems, Stators, Waves, Nozzle guide vanes
Journal Articles

Assessment of Machine Learning Wall Modeling Approaches for Large Eddy Simulation of Gas Turbine Film Cooling Flows: An a Priori Study

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Tadbhagya Kumar, Pinaki Pal, Sicong Wu, A. Cody Nunno, Opeoluwa Owoyele, Michael M. Joly, Dima Tretiak
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2024, 146(8): 081019.
Paper No: GTP-23-1294
https://doi.org/10.1115/1.4064556
Published Online: March 11, 2024
View Articletitled, Assessment of Machine Learning Wall Modeling Approaches for Large Eddy Simulation of Gas Turbine Film Cooling Flows: An a Priori Study
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Topics: Delays, Film cooling, Flow (Dynamics), Modeling, Large eddy simulation, Machine learning, Shear stress, Gas turbines, Flat plates, Pressure gradient
Journal Articles

Direct Numerical Simulation of Partial Fuel Stratification Assisted Lean Premixed Combustion for Assessment of Hybrid G-Equation/Well-Stirred Reactor Model

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Chao Xu, Muhsin Ameen, Pinaki Pal, Sibendu Som
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2023, 145(5): 051018.
Paper No: GTP-22-1425
https://doi.org/10.1115/1.4055873
Published Online: January 10, 2023
View Articletitled, Direct Numerical Simulation of Partial Fuel Stratification Assisted Lean Premixed Combustion for Assessment of Hybrid G-Equation/Well-Stirred Reactor Model
Open the PDF for Direct Numerical Simulation of Partial Fuel Stratification Assisted Lean Premixed Combustion for Assessment of Hybrid G-Equation/Well-Stirred Reactor Model in another window
Topics: Combustion, Engines, Flames, Fuels, Computer simulation, Pyrolysis, Displacement, Modeling, Temperature, Pressure
Journal Articles

Numerical Analysis of Combustion Dynamics in a Full-Scale Rotating Detonation Rocket Engine Using Large Eddy Simulations

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Pinaki Pal, Sinan Demir, Sibendu Som
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. February 2023, 145(2): 021702.
Paper No: JERT-22-1404
https://doi.org/10.1115/1.4055206
Published Online: September 1, 2022
View Articletitled, Numerical Analysis of Combustion Dynamics in a Full-Scale Rotating Detonation Rocket Engine Using Large Eddy Simulations
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Topics: Combustion, Dynamics (Mechanics), Explosions, Fuels, Large eddy simulation, Rocket engines, Waves, Pressure, Ejectors, Heat
Proceedings Papers

Direct Numerical Simulation of Partial Fuel Stratification Assisted Lean Premixed Combustion for Assessment of Hybrid G-Equation/Well-Stirred Reactor Model

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Chao Xu, Muhsin Ameen, Pinaki Pal, Sibendu Som
Proc. ASME. ICEF2021, ASME 2021 Internal Combustion Engine Division Fall Technical Conference, V001T06A005, October 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2021-67835
https://doi.org/10.1115/ICEF2021-67835
View Paper titled, Direct Numerical Simulation of Partial Fuel Stratification Assisted Lean Premixed Combustion for Assessment of Hybrid G-Equation/Well-Stirred Reactor Model
Open the PDF for Direct Numerical Simulation of Partial Fuel Stratification Assisted Lean Premixed Combustion for Assessment of Hybrid G-Equation/Well-Stirred Reactor Model in another window
Topics: Combustion, Computer simulation, Fuels
Journal Articles

Multidimensional Numerical Modeling of Combustion Dynamics in a Non-Premixed Rotating Detonation Engine With Adaptive Mesh Refinement

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Pinaki Pal, Gaurav Kumar, Scott A. Drennan, Brent A. Rankin, Sibendu Som
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. November 2021, 143(11): 112308.
Paper No: JERT-21-1006
https://doi.org/10.1115/1.4050590
Published Online: April 19, 2021
View Articletitled, Multidimensional Numerical Modeling of Combustion Dynamics in a Non-Premixed Rotating Detonation Engine With Adaptive Mesh Refinement
Open the PDF for Multidimensional Numerical Modeling of Combustion Dynamics in a Non-Premixed Rotating Detonation Engine With Adaptive Mesh Refinement in another window
Topics: Combustion, Engines, Explosions, Fuels, Pressure, Waves, Simulation, Dynamics (Mechanics), Computer simulation, Computational fluid dynamics
Journal Articles

An Automated Machine Learning-Genetic Algorithm Framework With Active Learning for Design Optimization

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Opeoluwa Owoyele, Pinaki Pal, Alvaro Vidal Torreira
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. August 2021, 143(8): 082305.
Paper No: JERT-21-1175
https://doi.org/10.1115/1.4050489
Published Online: April 9, 2021
View Articletitled, An Automated Machine Learning-Genetic Algorithm Framework With Active Learning for Design Optimization
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Topics: Algorithms, Design, Errors, Machinery, Optimization, Computational fluid dynamics, Simulation, Engines
Journal Articles

Numerical Analysis of Fuel Effects on Advanced Compression Ignition Using a Cooperative Fuel Research Engine Computational Fluid Dynamics Model

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Krishna Kalvakala, Pinaki Pal, Yunchao Wu, Goutham Kukkadapu, Christopher Kolodziej, Jorge Pulpeiro Gonzalez, Muhammad Umer Waqas, Tianfeng Lu, Suresh K. Aggarwal, Sibendu Som
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. October 2021, 143(10): 102304.
Paper No: JERT-21-1181
https://doi.org/10.1115/1.4050490
Published Online: March 29, 2021
View Articletitled, Numerical Analysis of Fuel Effects on Advanced Compression Ignition Using a Cooperative Fuel Research Engine Computational Fluid Dynamics Model
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Topics: Computational fluid dynamics, Engines, Fuels, Compression, Ignition, Heat
Journal Articles

A Novel Active Optimization Approach for Rapid and Efficient Design Space Exploration Using Ensemble Machine Learning

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Opeoluwa Owoyele, Pinaki Pal
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. March 2021, 143(3): 032307.
Paper No: JERT-20-1642
https://doi.org/10.1115/1.4049178
Published Online: December 16, 2020
View Articletitled, A Novel Active Optimization Approach for Rapid and Efficient Design Space Exploration Using Ensemble Machine Learning
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Topics: Algorithms, Combustion, Design, Machine learning, Optimization
Proceedings Papers

Numerical Analysis of Fuel Effects on Advanced Compression Ignition Using a Virtual Cooperative Fuel Research Engine Model

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Krishna C. Kalvakala, Pinaki Pal, Yunchao Wu, Goutham Kukkadapu, Christopher Kolodziej, Jorge Pulpeiro Gonzalez, Muhammad Umer Waqas, Tianfeng Lu, Suresh K. Aggarwal, Sibendu Som
Proc. ASME. ICEF2020, ASME 2020 Internal Combustion Engine Division Fall Technical Conference, V001T02A004, November 4–6, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2020-2939
https://doi.org/10.1115/ICEF2020-2939
View Paper titled, Numerical Analysis of Fuel Effects on Advanced Compression Ignition Using a Virtual Cooperative Fuel Research Engine Model
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Topics: Compression, Engines, Fuels, Ignition, Numerical analysis, Combustion, Stress, Computational fluid dynamics, Emissions, Gasoline
Proceedings Papers

Accelerating Computational Fluid Dynamics Simulations of Engine Knock Using a Concurrent Cycles Approach

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Daniel Probst, Sameera Wijeyakulasuriya, Pinaki Pal, Christopher Kolodziej, Eric Pomraning
Proc. ASME. ICEF2020, ASME 2020 Internal Combustion Engine Division Fall Technical Conference, V001T06A002, November 4–6, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2020-2916
https://doi.org/10.1115/ICEF2020-2916
View Paper titled, Accelerating Computational Fluid Dynamics Simulations of Engine Knock Using a Concurrent Cycles Approach
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Topics: Computational fluid dynamics, Cycles, Engines, Simulation, Combustion, Fuels, Chemistry, Clocks, Compression, Cylinders
Proceedings Papers

An Automated Machine Learning-Genetic Algorithm (AutoML-GA) Framework With Active Learning for Design Optimization

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Opeoluwa Owoyele, Pinaki Pal, Alvaro Vidal Torreira
Proc. ASME. ICEF2020, ASME 2020 Internal Combustion Engine Division Fall Technical Conference, V001T06A014, November 4–6, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2020-3000
https://doi.org/10.1115/ICEF2020-3000
View Paper titled, An Automated Machine Learning-Genetic Algorithm (AutoML-GA) Framework With Active Learning for Design Optimization
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Topics: Algorithms, Design, Machinery, Optimization, Simulation, Computational fluid dynamics, Internal combustion engines, Cylinders, Diesel engines, Errors
Journal Articles

Numerical Investigation of a Central Fuel Property Hypothesis Under Boosted Spark-Ignition Conditions

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Pinaki Pal, Krishna Kalvakala, Yunchao Wu, Matthew McNenly, Simon Lapointe, Russell Whitesides, Tianfeng Lu, Suresh K. Aggarwal, Sibendu Som
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. March 2021, 143(3): 032305.
Paper No: JERT-20-1654
https://doi.org/10.1115/1.4048995
Published Online: December 10, 2020
View Articletitled, Numerical Investigation of a Central Fuel Property Hypothesis Under Boosted Spark-Ignition Conditions
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Topics: Engines, Fuels, Ignition, Pressure, Computational fluid dynamics, Temperature, Combustion, Flames
Journal Articles

Numerical Investigation of Fuel Property Effects on Mixed-Mode Combustion in a Spark-Ignition Engine

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Chao Xu, Pinaki Pal, Xiao Ren, Magnus Sjöberg, Noah Van Dam, Yunchao Wu, Tianfeng Lu, Matthew McNenly, Sibendu Som
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. April 2021, 143(4): 042306.
Paper No: JERT-20-1655
https://doi.org/10.1115/1.4048242
Published Online: September 28, 2020
View Articletitled, Numerical Investigation of Fuel Property Effects on Mixed-Mode Combustion in a Spark-Ignition Engine
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Topics: Chemistry, Combustion, Engines, Flames, Fuels, Ignition, Nitrogen oxides, Heat, Pressure, Cycles
Journal Articles

Engine Combustion System Optimization Using Computational Fluid Dynamics and Machine Learning: A Methodological Approach

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Jihad A. Badra, Fethi Khaled, Meng Tang, Yuanjiang Pei, Janardhan Kodavasal, Pinaki Pal, Opeoluwa Owoyele, Carsten Fuetterer, Brenner Mattia, Farooq Aamir
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. February 2021, 143(2): 022306.
Paper No: JERT-20-1594
https://doi.org/10.1115/1.4047978
Published Online: August 27, 2020
View Articletitled, Engine Combustion System Optimization Using Computational Fluid Dynamics and Machine Learning: A Methodological Approach
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Topics: Algorithms, Computational fluid dynamics, Design, Engines, Machine learning, Optimization, Pistons, Machinery, Robustness, Internal combustion engines