The Local Aerodynamic Effect due to Miss-Staggering in Variable Stator Vanes
Research output: Contribution to book/Conference proceedings/Anthology/Report › Conference contribution › Contributed › peer-review
Contributors
Abstract
Multistage axial compressors require variable stator vanes to allow operability over a wide range of operating conditions. The vane profile is therefore restaggered through local rotation around the spindle axis. Multiple vanes of one blade row are linked through a ring and a mechanical gear. Within this mechanism some backlash will be present and will increase over operating time due to wear. This may lead to a deviation of the stagger angle of all vanes of a ring, as well as a local miss-staggering of individual vanes. To investigate the influence of these local deviations on the aerodynamic behavior of the compressor, tests have been conducted in a linear compressor cascade at engine representative Mach numbers. The cascade setup will be introduced and experimental results of stagger angle variation, including a local miss-staggering of the central profile, will be discussed. The tests include an opened and closed staggering of all profiles of the cascade combined with an additional local variation of stagger angle of the central vane to load and unload the vane. To guide the interpretation of the experimental results, numerical simulations using the RANS approach of the cascade setup were performed. Discussion of the experimental and numerical results will reveal the effect on the loss characteristic and turning of the three central vanes and separate the aerodynamic response of the individual vane passages on the local miss-staggering of the central vane.
Details
| Original language | English |
|---|---|
| Title of host publication | ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition |
| Publisher | American Society of Mechanical Engineers (ASME) |
| Volume | 10 |
| ISBN (electronic) | 978-0-7918-8886-5 |
| Publication status | Published - 2025 |
| Peer-reviewed | Yes |
Conference
| Title | ASME Turbomachinery Technical Conference & Exposition 2025 |
|---|---|
| Subtitle | Artificial Intelligence & Turbomachinery |
| Abbreviated title | ASME Turbo Expo 2025 |
| Conference number | 70 |
| Duration | 16 - 20 June 2025 |
| Degree of recognition | International event |
| Location | Renasant Convention Center |
| City | Memphis |
| Country | United States of America |
External IDs
| ORCID | /0000-0003-0900-8298/work/194824261 |
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Keywords
ASJC Scopus subject areas
Keywords
- Axial compressor, miss-staggering, Variable Stator Vanes (VSV)