Turbulent Prandtl number and spacetime temperature correlation measurements in an incompressible turbulent boundary layer
Abstract
Hotwire anemometry measurements in an incompressible turbulent boundary laeyr flow over a heated flat plate at zero pressure gradient were made using an xprobe and temperature fluctuation probe. The experiments resulted in direct measurement of the turbulent Prandtl number as a function of height through the boundary layer for three temperature difference cases. Also, spacetime correlations of temperature fluctuations Tprime were obtained with a pair of temperature fluctuation probes. The mean convection velocities of the Tprime largescale structure are presented for the three temperature difference cases. The mean convection velocity of the Tprime structure is a function of position y(+) and is found to be independent of the temperature difference for the cases considered.
 Publication:

AIAA, Aerospace Sciences Meeting
 Pub Date:
 January 1990
 Bibcode:
 1990aiaa.meetQ....B
 Keywords:

 Boundary Layer Flow;
 Incompressible Flow;
 Prandtl Number;
 Turbulent Boundary Layer;
 Turbulent Heat Transfer;
 Wind Tunnel Tests;
 Convective Heat Transfer;
 HotWire Anemometers;
 Stream Functions (Fluids);
 Temperature Distribution;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer