Programme

P.28 -- Poster, VCTP-49

Date: Wednesday, 31 July 2024

Time: 08:30 - 10:00

Hydrodynamic simulation of the air flow and dust particle motion in a multi-stage impactor

Pham Tuan Kiet (1), Dinh Van Trung (1,2)

Institute of physics

Multi-stage impactors have been widely used to collect atmospheric aerosols and separate them into size bins. In this contribution, we study the working of a real multi-stage impactor using publicly available hydrodynamic simulation code OpenFoam. We determine the steady state air flow inside the multi-stage impactor and then calculate the trajectories of the aerosol particles with different sizes within the Lagrangian framework. Using the simulation results, we estimate the collection efficiency of each impactor stage. We also compare the simulation results with the size distribution of the aerosols collected using our multi-stage impactor.

Presenter: Pham Tuan Kiet