Experimental study examines droplet behavior on heated surfaces, revealing effects on boiling and droplet formation.
Key Points
This research aims to understand how propylene glycol–propanetriol droplets behave when they hit heated porous surfaces, focusing on droplet penetration and boiling characteristics.
Used four types of sintered porous substrates with varying permeability and surface roughness.
Visualized droplet impacts using high-speed photography and analyzed data with image processing algorithms.
Investigated boiling phase transition characteristics and secondary droplet formation during boiling.
Droplet penetration is significantly affected by the porous substrate properties and droplet solution composition.
Increased propanetriol in the solution reduces droplet penetration into porous substrates.
Substrates with larger pore sizes and roughness lead to more secondary droplets erupting during boiling.