Buoyancy effect on heat transfer in forced channel flows
Abstract
The paper discusses the results of experimental and computational and theoretical studies of forced laminar and turbulent flows and heat transfer in channels under the conditions of an essential buoyancy effect. The main attention is given to upward and downward turbulent motion of liquid in heated vertical tubes. The boundaries and character of thermogravitational forces effect on velocity and temperature distribution, friction resistance and local heat transfer are determined. Relationships for calculation of boundaries of the gravity force field effect are generalized. In the case of a turbulent flow, the buoyancy effect on the averaged flow and on fluctuating motion are analyzed.
- Publication:
-
Heat Transfer 1982, Volume 1
- Pub Date:
- 1982
- Bibcode:
- 1982hetr....1..343P
- Keywords:
-
- Buoyancy;
- Channel Flow;
- Forced Convection;
- Laminar Heat Transfer;
- Turbulent Heat Transfer;
- Computational Fluid Dynamics;
- Flow Measurement;
- Gravitational Fields;
- Horizontal Orientation;
- Pipes (Tubes);
- Temperature Distribution;
- Velocity Distribution;
- Vertical Orientation;
- Fluid Mechanics and Heat Transfer