原文传递
Heat Transfer Due to Film
Condensaticn on Vertical Fluted Tubes
| 题名： | Heat Transfer Due to Film Condensaticn on Vertical Fluted Tubes |
| 作者： | V. K. Gtetg and P. J. Narto |
| 关键词： | Film Condensation, Fluted Tubes. Surface Tension Forces, Heat Transfer |
| 摘要： | An analysis of film condensation on a vertical fluted tube has been made considering gravitational and surface tension effects over the entire fluted surface, and using surface-oriented coordinates. For the first time surface tension effects are determined, as they should, from the shape of the condensate-vapor interface rather than the shape of the flute, two-dimensional conduction within the condensate film as well as in the fluted tube is considered. A finite-difference solution of the highly non-linear partial differential equation for the film thickness is coupled with a finite-element solution of the conduction problem. The procedure has been tested on a sinusoidal flute with amplitude to pitch ratio -0.2. A linear extrapolation, on a log-log basis, of our results shows good comparison with experimental data. |
| 报告类型： | 科技报告 |
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