A5074724414- Advanced Combustion Engine Technologies
- Combustion and flame dynamics
- Heat transfer and supercritical fluids
- Combustion and Detonation Processes
- Thermochemical Biomass Conversion Processes
- Rocket and propulsion systems research
- Biodiesel Production and Applications
- Advanced Chemical Physics Studies
- Catalytic Processes in Materials Science
- Ammonia Synthesis and Nitrogen Reduction
- Catalysis and Oxidation Reactions
- Hybrid Renewable Energy Systems
- Energetic Materials and Combustion
- Atmospheric chemistry and aerosols
- Advanced battery technologies research
- Catalysts for Methane Reforming
- Engine and Fuel Emissions
- Vehicle emissions and performance
- Chemical Looping and Thermochemical Processes
- Advanced Battery Materials and Technologies
- Spacecraft and Cryogenic Technologies
- Renewable energy and sustainable power systems
- Electric Vehicles and Infrastructure
- Catalysis and Hydrodesulfurization Studies
- Advanced Battery Technologies Research
King Abdullah University of Science and Technology
2022-2024
Ollscoil na Gaillimhe – University of Galway
2020-2023
Imagineering (Japan)
2017
Silesian University of Technology
2015
National Institute of Technology Karnataka
2014
A comprehensive experimental and kinetic modeling study of the ignition delay time (IDT) characteristics some binary blends C1–C2 gaseous hydrocarbons such as methane/ethylene, methane/ethane, ethane/ethylene was performed over a wide range composition (90/10, 70/30, 50/50%), temperature (∼800–2000 K), pressure (∼1–40 bar), equivalence ratio (∼0.5–2.0), dilution (∼75–90%). An extensive literature review conducted, available data were extracted to create database for our simulations. Based on...
A single-pulse shock tube study of the pyrolysis 2% C2–C6 1-alkenes is presented at 2 bar in temperature range 900–1800 K current study. Reactant, intermediate and product species are obtained quantified using gas chromatography-mass spectrometry (GC–MS) analysis. MS used for identification a flame ionization detector quantification. The experiments show effect carbon chain length on production smaller C1–C3 fragments. new detailed kinetic mechanism, NUIGMech1.0, to simulate data predictions...
To improve our understanding of the combustion characteristics propyne, new experimental data for ignition delay times (IDTs), pyrolysis speciation profiles and flame speed measurements are presented in this study. IDTs propyne were obtained at equivalence ratios 0.5, 1.0, 2.0 'air' pressures 10 30 bar, over a wide range temperatures (690–1460 K) using rapid compression machine high-pressure shock tube. Moreover, experiments performed single-pulse tube to study 2 bar pressure temperature...
The ignition delay time (IDT) characteristics of new ternary and quaternary blended C1 – C3 gaseous hydrocarbons, including methane/ethane/ethylene methane/ethane/ethylene/propane, are studied over a wide range mixture composition, temperature (∼800 2000 K), pressure (∼1 135 bar), equivalence ratio (∼0.5 2.0), dilution (∼75 90%) using both experimental data kinetic modeling tools. In this regard, all the tests were designed Taguchi approach (L9) to fulfill matrix required generate...
A single-pulse shock tube study of the four pentene isomers is carried out at 2 ± 0.16 bar and 900–1600 K. C1 to C6 species profiles were recorded using gas chromatography mass spectrometry analyses. The are identified quantified by flame ionization detection. High-pressure limiting pressure-dependent rate constants for 2M1B, 2M2B 3M1B + Ḣ calculated RRKM theory with a Master Equation (ME) analysis System Solver, MESS. mechanism was formulated based on rules theoretical calculations....
Allene and propyne are important intermediates in the pyrolysis oxidation of higher hydrocarbon fuels, they also a major source propargyl radical formation, which can recombine into different C6H6 isomers finally produce soot. In prior work (Panigrahy et al., "A comprehensive experimental improved kinetic modeling study on propyne", Proc. Combust. Inst 38 (2021)), pyrolysis, ignition , laminar flame speed were investigated. To understand features initial fuel breakdown two C3H4 isomers, new...
In this work, the ignition delay time characteristics of C2 – C3 binary blends gaseous hydrocarbons including ethylene/propane and ethane/propane are studied over a wide range temperatures (750 2000 K), pressures (1 135 bar), equivalence ratios (φ = 0.5 2.0) dilutions (75 90%). A matrix experimental conditions is generated using Taguchi (L9) approach to cover for validation chemical kinetic model. The data recorded low- high-pressure shock tubes two rapid compression machines (RCM) include...
Abstract The pyrolysis of selected C 3 –C 5 allylic hydrocarbons has been studied using a single‐pulse shock tube. A new tube designed and constructed by recommissioning an existing conventional This facility enables the investigation high‐temperature chemical kinetics with emphasis on combustion chemistry. modifications performed are described, details sampling system to analyze species concentration gas chromatography‐mass spectrometry‐flame ionization detection (GC‐MS flame detector) also...
Continued economic growth is accelerating the demand for transport energy in road, aviation, and marine sectors. The environmental impacts of technologies across these sectors need significant attention if society to meet its climate change mitigation targets. Current policies focusing entirely on electrification are shown be insufficient mitigating impacts. Powertrains equipped with combustion engines will still operational 2040 onwards, especially developing countries currently...
A newly developed detailed chemical kinetic mechanism, NUIGMech1.1, is used to study the pyrolysis of C1 – C7 hydrocarbons at a constant initial fuel concentration in temperature range 900 2000 K. We observe that, for given reaction time and pressure, does not occur below certain “threshold temperature”. This phenomenon explored further this by performing rate production analyses different fuels. It observed that highly sensitive unimolecular dissociation reactions products determine...
This paper presents a comprehensive potential energy surface (PES) for hydrogen atom addition to and abstraction from 2-methyl-1-butene, 2-methyl-2-butene, 3-methyl-1-butene the subsequent ß-scission H transfer reactions. Thermochemical parameters species on Ċ5H11 were calculated as function of temperature (298–2000 K), using series isodesmic reactions determine formation enthalpies. High-pressure limiting pressure-dependent rate constants Rice–Ramsperger–Kassel–Marcus theory with...
The present study complements our previous studies of the reactions hydrogen atoms with C5 alkene species including 1- and 2-pentene branched isomers (2-methyl-1-butene, 2-methyl-2-butene, 3-methyl-1-butene), by studying C2–C4 alkenes (ethylene, propene, 2-butene, isobutene). aim current work is to develop a hierarchical set rate constants for Ḣ atom addition C2–C5 alkenes, both linear branched, which can be used in development chemical kinetic models. High-pressure limiting...