Numerical Simulation of Heat Transfer and Ingress Phenomena in Rotor-Stator Disk Systems with Different Rim Seal Configuration
| Autor: | Chih-da Huang, 黃致達 |
|---|---|
| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 This study used computational fluid dynamics (CFD) software, Fluent®, to simulate the heat transfer and ingress phenomena of rotor-stator disk systems with different rim seal geometry. The key parameter of this research including rim seal geometry, rotation speed of rotating disk (Req), and superimposed airflow rate (Cw) are the detailed discussion of influence of the field characteristic flows to rotary table system in it. The numerical results are verified very well with existing experimental data, produced by indigenous rotating disk system with radial clearance configuration, in terms of static temperature distribution on rotating disk and the Nu value and the h value distribution on rotating disk. Through originally discoveries, Req and Cw field characteristic for flowing fail to agree, when namely increase Req or reduce Cw, its change of a structure for flowing is quite similar. And with the increase of Req and Cw, the upper reaches stator is a phenomenon of soaring with Nu value on downstream rotor plate gradually. Nu value of swimming on the rotor plate as follows is comparatively obvious. As the results, the stability of flow structure can be sustained to delay ingestion by appropriate rim seal. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|