Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Aerosol dynamics"”.
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Modeling The Evolution Of Vehicle Exhaust Plume Near Road And In Laboratory Dilution Systems Using The Ctag Model
… reacting flow model, the Comprehensive Turbulent Aerosol Dynamics and Gas Chemistry (CTAG) model. CTAG is designed to simulate the transport and transformation of multiple air pollutants in various environments. For near-road applications, CTAG couples the major turbulent mixing processes with …
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Statistical Inverse Modelling of Aerosol Size Distributions
… uncertainty in the radiative forcing caused by aerosols is considered the main factor limiting our understanding of past and future climate changes. Some of this uncertainty is because the processes governing the aerosol dynamics are not fully known, and some uncertainty is because current …
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Study of dynamics of airflow and aerosol transport and deposition in human upper airways using large-eddy simulations
… (LES) strategy to investigate airflow and aerosol dynamics in the human upper airways using a truncated SimInhale configuration. Inflow conditions include three steady inhalation flow rates (14.2, 53.2, and 71 L/min), representing quasi-laminar, moderate, and high turbulence conditions, and …
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CFD Modeling of nanoparticle formation in a plasma synthesis reactor
… considered. The commercially computational fluid dynamics code FLUENT Ã 6.0, is used for the detailed calculation of the turbulent fluid flow and particle growth. This code is then completed with a model for aerosol dynamics using the first three moments of the particle size distribution. The …
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Simulation of multiple-component charged aerosol evolution
… nuclear source term requires the computation of aerosol dynamics. Solutions to the aerosol general dynamic equation (GDE) are difficult to obtain by analytical or numerical methods when more realistic problems are considered. The direct simulation Monte Carlo (DSMC) technique is capable of …
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Instrument development for exploring the influence of interfacial chemistry on aerosol growth, aging, and partitioning of gases
Investigation of aerosol chemistry and growth under atmospheric conditions in a novel rotating aerosol suspension chamber with cavity ring-down spectroscopy provided key insight into the effect of pollutants and other vapors on the overall atmospheric lifetime of particulate matter. The Atmospheric …
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Gas-phase processes for carbon nanotubes production: catalyst synthesis and CNT reorientation dynamics
… the scalable production of high-quality CNTs. Aerosol dynamics play a uniquely important role in CNT synthesis and aerosol processes have emerged as a versatile approach for the scalable synthesis of highly functional nanomaterials. Motivated by this prospect, this dissertation aims to …
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Improving Evaporative Light Scattering Detector performance using Experiments and Modelling
… Particle Analyzer (PDPA), the Aerodynamic Aerosol Classifier (AAC), and the Scanning Mobility Particle Sizer (SMPS), to characterise droplet and particle distributions at various stages within the device. Initial droplet size distributions were reconstructed using dioctyl sebacate (DOS) as …
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Sub 2 nm Particle Characterization in Systems with Aerosol Formation and Growth
<p>Aerosol science and technology enable continual advances in material synthesis and atmospheric pollutant control. Among these advances, one important frontier is characterizing the initial stages of particle formation by real time measurement of particles below 2 nm in size. Sub 2 nm particles …
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Investigation of the evolution of atmospheric particles with integration of the stochastic particle-resolved model PartMC-MOSAIC and atmospheric measurements
Atmospheric aerosols are known to have strong impacts on human health, visibility and the climate system. They originate directly from either anthropogenic or natural emission, or can be also formed through gas- particle conversion processes. Aerosol particles in the atmosphere often represent a …
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Droplet and Particle Dynamics in Aerosol Reactors and Environmental System
<p>Aerosol science and engineering is an enabler for continual advances in nanomaterial synthesis. The spray-based techniques have been used extensively for the large-scale production of nanoparticles. Synthesis of particles with a desired the size and morphology is of key importance for exploiting …
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Particle Charging and Classification: The Mass Mobility Aerosol Spectrometer (M2AS)
Quantifying aerosols is essential for understanding their behaviour and assessing their impacts on health, the environment, and industrial applications. Accurate characterisation plays a critical role in evaluating air quality and respiratory health risks, optimising manufacturing processes, and …
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Predicting Soot Emissions with Advanced Turbulent Reacting Flow Modelling
… in the intricate coupling between kinetics, aerosol dynamics and turbulence, and the wide range of scales that have to be simulated. There is a clear need to explore the fundamentals of soot evolution in turbulent conditions and develop effective methodologies to predict the soot particle …
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Influence of Aerosols During Amine-Based CO2 Capture: Evolution and Control
… amine, resulting in amine loss as vapor or aerosolized emissions to the exiting flue gas. The nanoparticles in the flue gas that escape conventional control equipment, exacerbate solvent losses through complex aerosol mechanisms, primarily condensation. Thorough understanding of the …