Explore the process of modeling water vapor condensation in headlamps using advanced computational fluid dynamics (CFD) techniques. Learn about the Discrete Phase Model (DPM), Eulerian Wall Film (EWF), and Volume of Fluid (VOF) model transition approach. Discover how water molecules are initiated through DPM, absorbed onto walls due to thermophoretic and other gradients, and how the absorption of particles increases EWF thickness. Understand the transition between EWF and VOF models based on predefined thickness limits. This 14-minute video provides valuable insights into complex CFD analysis techniques for automotive lighting applications.