Velocity and temperature profiles in rough annuli
Abstract
Velocity and temperature profiles were measured in an annular flow cross section. Three different rough rods in two outer tubes each were investigated. The slopes of the nondimensional logarithmic velocity profile in both the inner rough zone and the outer smooth zone vary with the Reynolds number. The slopes of the nondimensional temperature profile deviate from a logarithmic line in a large portion of the flow cross section. The turbulent Prandtl number is smaller than one and varies with the distance from the wall.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- April 1981
- Bibcode:
- 1981STIN...8233672M
- Keywords:
-
- Annular Flow;
- Annuli;
- Deviation;
- Fluid Flow;
- Heat Transfer;
- Pressure Drop;
- Reynolds Number;
- Temperature Profiles;
- Velocity Distribution;
- Energy Transfer;
- Logarithms;
- Surface Properties;
- Temperature Dependence;
- Temperature Measurement;
- Fluid Mechanics and Heat Transfer