Velocity measurements in a turbulent natural convection boundary layer
Abstract
The initial results from an investigation of the velocity and temperature profiles for a turbulent natural convective boundary layer using laser Doppler anemometry (LDA) are reported. A DISA type seeding generator spewed corn oil droplets over a flat plate immersed in a flow in order to obtain velocity fluctuations, and thermocouples provided data for the temperature profiles. The plate was maintained at a surface temperature of 80 C. Sufficient measurements were made to characterize the laminar, transition, and the turbulent regions. The measurements taken in the boundary layer satisfied an integral energy balance, with residence time weighting of the values yielding corrections that amounted to only 2-3 percent.
- Publication:
-
Heat Transfer 1982, Volume 2
- Pub Date:
- 1982
- Bibcode:
- 1982hetr....2..305C
- Keywords:
-
- Flow Velocity;
- Free Convection;
- Laser Doppler Velocimeters;
- Turbulent Boundary Layer;
- Velocity Measurement;
- Convective Heat Transfer;
- Heat Balance;
- Integral Equations;
- Turbulent Heat Transfer;
- Fluid Mechanics and Heat Transfer