Hydrodynamics and heat transfer during the condensation of stationary vapor on a horizontal cylinder
Abstract
The hydrodynamics of film flow and heat transfer during the condensation of practically stationary vapor on single horizontal cylinders of various diameters are investigated experimentally, with the dimensionless ratio of the cylinder diameter to the capillary constant varying in the range 1.3-90. It is shown that the wave process of condensate flow occurs on cylinders of any diameter, which results in a substantial intensification of heat transfer in comparison with the Nusselt theory. The wave characteristics of flow are found to depend to a large degree on the ratio of gravitational forces and surface tension.
- Publication:
-
Akademiia Nauk SSSR Sibirskoe Otdelenie Izvestiia Seriia Tekhnicheskie Nauki
- Pub Date:
- June 1986
- Bibcode:
- 1986SiSSR.......24G
- Keywords:
-
- Condensing;
- Cylinders;
- Fluid Films;
- Freon;
- Heat Transfer;
- Hydrodynamics;
- Diameters;
- Gravitational Effects;
- Interface Stability;
- Nusselt Number;
- Vapor Phases;
- Wall Temperature;
- Fluid Mechanics and Heat Transfer