Numerical simulation of fluid flow and heat transfer in a thin liquid film over a rotating disk
Abstract
The results of a numerical simulation of the flow field and associated heat transfer coefficient are presented for the free surface flow of a thin liquid film adjacent to a horizontal rotating disk. The computation has been performed for different flow rates and rotational velocities using a three-dimensional boundary-fitted coordinate system. Since the geometry of the free surface is unknown and dependent on flow rate, rate of rotation, and other parameters, an interative procedure had to be used to ascertain its location. The computed film height agreed well with existing experimental measurements. The flow was dominated by inertia near the entrance and close to the free surface, and dominated by centrifugal force at larger radii and adjacent to the disk. The rotation enhanced the heat transfer coefficient by a significant amount.
- Publication:
-
International Journal of Heat and Mass Transfer
- Pub Date:
- June 1992
- Bibcode:
- 1992IJHMT..35.1441R
- Keywords:
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- Computational Fluid Dynamics;
- Digital Simulation;
- Fluid Films;
- Heat Transfer Coefficients;
- Rotating Disks;
- Thin Films;
- Centrifugal Force;
- Flow Distribution;
- Free Flow;
- Mathematical Models;
- Nusselt Number;
- Fluid Mechanics and Heat Transfer