Cooling of a rotating disk by means of an impinging jet
Abstract
The effect that a jet impinging on a rotating disk has on the cooling process of the disk is measured experimentally. The laminar and turbulent local heat transfer coefficients are obtained for a wide range of rotational and jet Reynolds numbers. Correlation formulas are proposed for both flow conditions, and respective differences in heat transfer mechanisms are discussed. It is shown that the jet promotion of turbulence causes laminar heat transfer coefficients to increase strongly but exerts no such pronounced influence on turbulent heat transfer. The correlation formula for laminar heat transfer is compared with existing experimental data, and satisfactory agreement is obtained.
- Publication:
-
Heat Transfer 1982, Volume 3
- Pub Date:
- 1982
- Bibcode:
- 1982hetr....3..333B
- Keywords:
-
- Air Cooling;
- Cooling Systems;
- Heat Transfer Coefficients;
- Jet Impingement;
- Rotating Disks;
- Flow Measurement;
- Laminar Heat Transfer;
- Reynolds Number;
- Temperature Measurement;
- Test Stands;
- Turbulent Heat Transfer;
- Fluid Mechanics and Heat Transfer