Abstract Aerosols represent a health risk since small droplets may enter the respiratory system and cause lung cancer, allergies, or diseases like COVID-19 In this work, an Eulerian-Lagrangian CFD model is used based on a voxel-based (GeoDict) and a mesh-based (StarCCM+) code For evaluating accuracy and computational time of both models, we compare fractional filtration efficiency and pressure drop to an empirical solution for a single fiber and to experimental results for a complex 3D fibrous filter material Simulation results of both methods are in good agreement with empirical and measurement results although the complex geometry of the fibers is captured more accurately by the unstructured mesh using the same resolution Computing times are found to be much faster using the voxel-based code
Comparing voxel-based and mesh-based CFD models for aerosol deposition on complex fibrous filters