Master of Science (MS)
Physics and Astronomy
Aerosol transport in confined spaces was studied via numerical simulation using the dynamic aerosol equation, which is Boltzmann?s transport equation at the hydrodynamic limit. Until recent years, there existed no comprehensive computational tool to predict the spatial distribution and time evolution of aerosol size spectrum. A previously developed code, INDASOL3D, solves the dynamic aerosol equation by using a homogenized control-volume based finite difference method applying the group sectional method on the coagulation dynamics. However, quantitative correctness has not been satisfactory. In this thesis, two new codes (SAEROSA, and CAEROT) were developed. SAEROSA computes the time evolution of the size spectrum in a spatially homogenized aerosol due to coagulation and deposition with user defined arbitrary group sectionalization. CAEROT computes space and time dependent aerosol size spectrum in an enclosed space by solving the lumped parameter integral transport equation along stream tubes. Compared to INDASOL3D, more comprehensive aerosol physics and improved numerical methods were included into CAEROT to resulting in a better prediction. SAEROSA was benchmarked against an existing code, MAEROS, while CAEROT was validated against experimental data obtained at the LSU Nuclear Science Center. Both codes give good results quantitatively and qualitatively.
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Park, HyeongKae, "Development and implementation of fine structure aerosol spectrum coagulation kernels and deposition mechanisms using advanced nodal method in the CAEROT code" (2003). LSU Master's Theses. 785.