Abstract
The casing treatment is one of passive control techniques to extend the operating stability of centrifugal compressor and has been successfully adopted, commonly in the impeller. In the paper a mixed recirculation casing treatment simultaneously used in the impeller and diffuser is presented, and its effect on the extension of operating range as well as the mechanism is investigated numerically. The results shows that, an appropriate mixed recirculation strategy can increase the stall margin of compressor by 9.39% though at the costs of the efficiency sacrifice of 1.7% under the design condition.
| Original language | English |
|---|---|
| Pages (from-to) | 87-92 |
| Number of pages | 6 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 38 |
| Issue number | 1 |
| State | Published - 1 Jan 2017 |
Keywords
- Casing treatment
- Mixed recirculation
- Stall margin extension