Numerical study of aerosol particles collection by falling drops

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To model the capture of aerosols by an isolated drop falling at terminal velocity, an Eulerian approach to simulate both<br/>
internal and external flows (gas phase: air surrounding the drop, liquid phase: water of the drop) is coupled to a Lagrangian<br/>
approach to simulate the transport of the dispersed phase (aerosol). The flows are simulated with Direct Numerical<br/>
Simulation (DNS), by numerically solving the incompressible Navier-Stokes equations. The dynamics of the liquid/gas<br/>
interface is modeled using both Volume of Fluid (VOF) and Level Set methods (Vaudor et al. 2017). The aerosol transport<br/>
is simulated by applying Newton's second law to calculate their trajectories, considering drag force and Brownian motion.<br/>
We show that this approach gives results similar to that of the literature where no interface dynamics are employed. This<br/>
suggests that present methodology can be used to build collection efficiency database in the case of oscillating droplets at<br/>
larger Reynolds number.

Technical datasheet
- Year of publication
  
  2023
- Language
  
  Fran ais
- Discipline(s)
  
  Ingénierie des procédés
- Author(s)
  
  REYES E., M NARD T., R VEILLON J., LEMAITRE P., BELUT E.
- Reference
  
  Acte de congr s CFA 2023, 15 16 mars 2023,10.25576/ASFERA-CFA2023-32900, p 58