Abstract
Gas annular seals are commonly adopted for leakage control in turbomachinery applications. Scallop seal is an representative example of damper seals, and is attractive from rotordynamic stability viewpoint. To understand flow physics in such seals a computational analysis is developed to study compressible, turbulent flow in it. The following issues are addressed: (i) validation of results obtained using periodic boundary conditions accounting for turbulent and compressible flows, (ii) effect of the rotor rotation and inlet swirl ratio on flow development in the seal, (iii) extrapolation of the full-length results from limited periodic simulations, and (iv) breakdown of the friction factor on contributing pressure and shear stress components. The computational techniques presented can help address the design related issues more economically, and the findings offer insight into the fluid physics associated with a scallop seal.
| Original language | English |
|---|---|
| Pages (from-to) | 269-277 |
| Number of pages | 9 |
| Journal | American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD |
| Volume | 369 |
| Issue number | 5 |
| Publication status | Published - 2001 |
| Externally published | Yes |
| Event | 2001 ASME International Mechanical Engineering Congress and Exposition - New York, NY, United States Duration: 11 Nov 2001 → 16 Nov 2001 |