Effect of surface material properties and surface characteristics in evaporative spray cooling
Abstract
In the spray cooling of a heated surface, variations in the surface contact angle cause a change in nucleation characteristics and thereby influence the heat transfer process. Results are presented for different surface coatings at various spray configurations. The surface roughness variation influences the flow field, altering the maximum liquid film thickness, the bubble diameter, vapor entrapment, bubble departure characteristics and thereby the ability of the surface to transfer heat. The effect of surface roughness on spray cooling is also studied.
- Publication:
-
AIAA and ASME, 5th Joint Thermophysics and Heat Transfer Conference
- Pub Date:
- June 1990
- Bibcode:
- 1990jtht.confR....S
- Keywords:
-
- Evaporative Cooling;
- Hot Surfaces;
- Spray Characteristics;
- Surface Properties;
- Bubbles;
- Heat Transfer;
- Nucleation;
- Surface Roughness;
- Fluid Mechanics and Heat Transfer