Reza Kholghy
Professor
Canada Research Chair in Particle Technology and Combustion Engineering
Faculty of Engineering and Design
Department of Mechanical and Aerospace Engineering
Ottawa, Ontario
reza.kholghy@carleton.ca
Mobile:
(613) 227-6206
Office:
(613) 520-2600 ext. 7119
Expert In
Bio/Research
Kholghy is the director of Energy and Particle Technology Laboratory.
His research focuses on novel energy storage technologies using energetic particles, process design for green house gas conversion, multi-scale design of nanoparticle synthesis processes in gas phase as well as partic...
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His research focuses on novel energy storage technologies using energetic particles, process design for green house gas conversion, multi-scale design of nanoparticle synthesis processes in gas phase as well as partic...
Click to Expand >>
Bio/Research
Kholghy is the director of Energy and Particle Technology Laboratory.
His research focuses on novel energy storage technologies using energetic particles, process design for green house gas conversion, multi-scale design of nanoparticle synthesis processes in gas phase as well as particulate emissions from combustion and their impact on climate change. He has made significant and novel contributions that improve our understanding of critical processes involved in carbonaceous nanoparticle formation during combustion. These contributions have helped mitigate emissions of particulate matter from combustion devices and paved the way for developing efficient processes for the synthesis of valuable nanoparticles.
His work has focused primarily on simulating complex processes involved in nanoparticle formation alongside experimental investigations of the effects of fuel chemistry on nanoparticle formation and their morphology. He performed detailed measurements on the combustion of jet fuels as well as biodiesel to investigate their effects on soot formation. His work demonstrated that subtle differences in the fuel structure have significant effects on the concentration and morphology of soot particles during combustion. Such findings are instrumental for formulating cleaner fuel blends capable of complete combustion and ones that reduce particulate emissions.
He was among the first to demonstrate that nascent soot nanoparticles have a liquid-like structure and were undetected with optical methods. He proposed a novel model that explains the transition of transparent liquid-like soot structure to light absorbing solids with high temperature annealing. He experimentally demonstrated that diffusion flames commonly used to characterize the sooting tendency of jet fuels in laboratories do not accurately represent the presence of heavy components of the jet fuel distillate that drive soot nucleation. This finding facilitates the development of new distillation processes and realistic test conditions to formulate cleaner fuels with lower soot emissions.
Recently, he proposed a kinetic model which explains the temperature dependency of the nucleation process during soot formation. This model captures the irreversible behavior of soot nucleation from resonantly stabilized hydrocarbon radicals, recently discovered with advanced optical diagnostics. He was also the first person to simulate the graphitic structure of soot nanoparticles using a novel particle dynamic model that tracks the detailed fractal morphology and graphitic structure of agglomerates to elucidate particle graphitization. He applied multiple diagnostic techniques to investigate the evolution of soot morphology and cross-validated each measurement that is critical for accurate data analysis of optical and intrusive techniques for detecting different types of soot particles. He also interfaced mesoscale simulations of particle morphology and their optical properties and experimentally benchmarked scattering and absorption properties of soot particles, which is crucial for advanced laser diagnostics, climate models and fire detectors.
Click to Shrink <<
His research focuses on novel energy storage technologies using energetic particles, process design for green house gas conversion, multi-scale design of nanoparticle synthesis processes in gas phase as well as particulate emissions from combustion and their impact on climate change. He has made significant and novel contributions that improve our understanding of critical processes involved in carbonaceous nanoparticle formation during combustion. These contributions have helped mitigate emissions of particulate matter from combustion devices and paved the way for developing efficient processes for the synthesis of valuable nanoparticles.
His work has focused primarily on simulating complex processes involved in nanoparticle formation alongside experimental investigations of the effects of fuel chemistry on nanoparticle formation and their morphology. He performed detailed measurements on the combustion of jet fuels as well as biodiesel to investigate their effects on soot formation. His work demonstrated that subtle differences in the fuel structure have significant effects on the concentration and morphology of soot particles during combustion. Such findings are instrumental for formulating cleaner fuel blends capable of complete combustion and ones that reduce particulate emissions.
He was among the first to demonstrate that nascent soot nanoparticles have a liquid-like structure and were undetected with optical methods. He proposed a novel model that explains the transition of transparent liquid-like soot structure to light absorbing solids with high temperature annealing. He experimentally demonstrated that diffusion flames commonly used to characterize the sooting tendency of jet fuels in laboratories do not accurately represent the presence of heavy components of the jet fuel distillate that drive soot nucleation. This finding facilitates the development of new distillation processes and realistic test conditions to formulate cleaner fuels with lower soot emissions.
Recently, he proposed a kinetic model which explains the temperature dependency of the nucleation process during soot formation. This model captures the irreversible behavior of soot nucleation from resonantly stabilized hydrocarbon radicals, recently discovered with advanced optical diagnostics. He was also the first person to simulate the graphitic structure of soot nanoparticles using a novel particle dynamic model that tracks the detailed fractal morphology and graphitic structure of agglomerates to elucidate particle graphitization. He applied multiple diagnostic techniques to investigate the evolution of soot morphology and cross-validated each measurement that is critical for accurate data analysis of optical and intrusive techniques for detecting different types of soot particles. He also interfaced mesoscale simulations of particle morphology and their optical properties and experimentally benchmarked scattering and absorption properties of soot particles, which is crucial for advanced laser diagnostics, climate models and fire detectors.
Click to Shrink <<