In the surface filtration process with pores larger than particle size, formation of bridges plays a crucial role in filter cake structure and efficiency throughout process. First, to understand microscopic information required for bridging mechanism, we use two-way coupling computational fluid dynamics (CFD)–discrete element method (DEM) simulate deposition characteristics particles ceramic me...

This paper uses a model, and data on particle size distributions, filter efficiencies, and particle deposition rates to estimate the reductions in the indoor mass concentrations of particles attainable from use of filters in HVAC supply airstreams. Additionally, the energy and total costs of the filtration options are estimated. Predicted reductions in cat and dust-mite allergen concentrations ...

This paper presents a numerical model for a full scale hybrid particulate collector (HPC), which combines the ESP technology and the filtration technology together. The corona discharge is solved by using a finite volume method. The turbulent flow equations are solved by using the Fluent package. The effect of the electric field on the fluid field named electrohydrodynamic is considered. The pa...

The effect of the pore size distribution on size-resolved filtration efficiency was investigated for two ceramic particulate filters using matter (PM) generated by a spark-ignition direct-injection engine fueled with gasoline. cordierite filter tested had porosity 43%, median diameter 12 ?m, and wide lognormal standard deviation (??) 0.4. aluminum titanate very similar porosity, diameter, thick...

Face coverings, such as surgical masks and respirators, have an important role in preventing bacterial viral transmission, especially during a global pandemic like COVID-19. Therefore, to secure their availability, new manufacturers the use of novel materials must be encouraged. However, first properly tested for safety efficiency, required by relevant standard, valid specific region. All stand...