Mechanisms for control of aerosols by fibrous media based on DEM and LBM: A review

Abstract

Aerosols are a primary source of indoor pollution. In recent years, there has been significant interest in identifying the control mechanisms of aerosolized contaminants by fibrous media. In this review paper, modeling of fibrous media has been summarized, and aerosol deposition on fibrous media has been clarified. This work thoroughly examines the control mechanism of fibrous media with respect to particles and droplets. The numerical modeling of the fibrous media structure assembly was examined in depth to explore the main structural parameters that affect the fiber particle capture efficiency. The merits and disadvantages of the discrete element method (DEM) and lattice Boltzmann method (LBM) approaches for particle deposition characteristics of fibrous media modeling were discussed in this work. Subsequently, mechanisms for the control of aerosols by fibrous media and application of the computational fluid dynamics–discrete element method (CFD-DEM) and lattice Boltzmann method (LBM) were explained. Furthermore, the morphology of the fibrous media in relation to droplet impact was investigated. The summary of this paper could further promote the optimization of the structure and performance of fibrous media.