Investigation of stall recovery potential in a transonic compressor rotor

Jinhua Lang, Wuli Chu, Stephen Spence, Guangyao An

Research output: Contribution to journalArticlepeer-review

Abstract

In order to evaluate the potential of stall recovery at different operating points during the stall process in a transonic environment, three-dimensional multi-passage numerical simulations were conducted on the transonic compressor, NASA Rotor 37. The results showed that the whole stall evolution process can be divided into three stages depending upon the possibility for the compressor to recover to a stable operating condition by reducing the outlet pressure. At the first stage of the stall process, the compressor could successfully be driven back to a stable operating state by decreasing the outlet pressure. In addition, it was observed that the time of the stall recovery process was shorter when the outlet pressure was lowered more. At the second stage of stall, the magnitude of the outlet pressure played a decisive role in determining whether the compressor could recover to a stable state. When the compressor operation moved to the third stage of the stall process, “stall hanging” occurred, which means that the compressor could not recover from the stall regardless of how much the outlet pressure was reduced.
Original languageEnglish
Pages (from-to)171-184
JournalProceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy
Volume235
Issue number2
Early online date04 Apr 2020
DOIs
Publication statusPublished - 01 Mar 2021

Keywords

  • Mechanical Engineering
  • Energy Engineering and Power Technology

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