Numerical Study of Particle Filtration
These researchers are using MSI resources for five projects:
- A novel Solar-Assisted Large-Scale Cleaning System (SALSCS) for urban air remediation. The current research is focused on studying the fluid and heat flow fields and system performance of different system configuration designs by means of a transient 3D numerical simulation within ANSYS Fluent with simulation jobs running on MSI Itasca system. Recently, a SALSCS system has been designed which is demonstrated to process atmospheric air at a flow rate of 2.64×105 m/s.
- Design and optimization of pleated filters with particle loading using numerical methods. The researchers aim at developing a model for the design of pleated filter with particle loading with the aid of numerical simulation. They plan to calculate particle deposition on filter media from the interaction of gas flow field and particle trajectory. The simulation will help understanding of the performance of pleated filters with dust cake buildup and lead to a new design criteria for this condition.
- Modeling and designing of the gasoline particulate filter. Gasoline particulate filter (GPF) plays an important role in controlling fine particle emission from gasoline engines, especially for the newly-developed gasoline direct injection engine used in light-duty vehicles. The backpressure and filtration performance of GPF will be modeled for both clean and loaded conditions, and the results will be used to guide the design of better GPF for vehicle applications.
- Modeling of the charging efficiency of nanoparticle agglomerates. Charging efficiency of aerosols plays a significant role in particle precipitation, filtration and electrical measurement. The charging efficiency is dependent on the particle properties such as the electrical capacitance, surface area, and possibly other parameters. Numerical calculation of the electrical capacitance is being carried out by a variational method which seeks to minimize the electrical potential energy. With the electrical capacitance calculated, the charging efficiency can be obtained afterwards.
- Numerical assessment of the effect of upstream flow non-uniformity to particle deposition pattern and filter performance under particle loading. The project aims to understand the flow field under non-uniform flow conditions and the particle transportation properties under it. This work will be important for filtration system and filter design in practical applications.
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