Determination of the Parameters that Make the Greatest Contribution to the Change in the Quality of the Open Cell Foam Filters Based on Numerical Simulation and Experimental Studies

Abstract

Numerical simulation and experimental studies of the air flow in open foam cell material, which is a model of an aerosol filter, have been carried out. The experimental sample duplicates the geometry of the computational model and is created from the inverse matrix using three-dimensional printing. The results of the experiments are in good agreement with the calculated data for air flow rates providing the laminar flow regime. Some difference in the data is manifested in the case of the turbulent regime, which can be explained by the additional quality requirements of the grid partition. The essentially nonlinear nature of the curve in all flow regimes for a medium with minimal porosity indicates a complex flow pattern with the formation of small vortices even at low flow rates. Particle deposition efficiency has a maximum value for a material with a minimum porosity; however, the filter quality parameter at this value is the smallest and is determined by the pressure drop. Studies show that the use of open cell foam materials with a higher porosity of the medium is more preferable to improve the filter quality parameter, but there is a certain limiting value of the average porosity at which the filter quality parameter takes the maximum value. The search for the specified value is the goal of our further research