Analysis of jet suppressing root leakage in plane cascade
Abstract
The three-dimensional numerical simulation of the sealing structure of compressor cascade with jet structure is carried out to study the flow structure of the tooth cavity under the influence of jet. Based on this, the influence of jet on the flow performance in the tooth cavity was analyzed from four aspects of vorticity distribution, turbulent kinetic energy distribution, Mach number distribution and static pressure distribution. The results show that the interaction of the jet flow and the leakage flow makes the internal flow structure of the tooth cavity complicated and changeable. The two fluids are connected and mixed with each other and keep separating and converging, which makes the flow loss increase sharply and the leakage coefficient is greatly reduced. The jet flow drastically changes vorticity distribution and static pressure distribution in the tooth cavity. In the jet-affected section, the jet-affected range is approximately 2 times the circumferential width of the jet port.
- Publication:
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Materials Science and Engineering Conference Series
- Pub Date:
- February 2021
- DOI:
- 10.1088/1757-899X/1081/1/012018
- Bibcode:
- 2021MS&E.1081a2018T