Rotating Instabilities in a Low-Speed Single Compressor Rotor Row with Varying Blade Tip Clearance
Abstract
1. Introduction
2. Experimental Setup
3. Numerical and Mathematical Approaches
3.1. Mesh Setup
3.2. Numerical Setup
3.3. DMD Method
4. Results and Discussion
4.1. Overall Performance
4.2. Dynamic Characteristics
4.3. DMD-Based Analysis
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
Abbreviations
BPF | Blade passing frequency |
CFD | Computational fluid dynamics |
DMD | Dynamic mode decomposition |
FFT | Fast Fourier transform |
LE | Leading edge |
LSRC | Low speed research compressor |
NSV | Non-synchronous vibration |
PSD | Power spectral density |
RANS | Reynolds-averaged Navier–Stokes |
RI | Rotating instability |
SST | Shear stress transport |
STD | Standard deviation |
TE | Trailing edge |
TLV | Tip leakage vortex |
ZLES | Zonal large eddy simulation |
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Characteristic | Value |
---|---|
Rotating speed | 1000 rpm |
Casing diameter | 1500 mm |
Hub-to-tip ratio | 0.84 |
Rotor blade count | 63 |
Rotor blade chord length (Tip) | 116 mm |
Solidity of rotor blades (Tip) | 1.55 |
Mass flow at design point | 27.89 kg/s |
Reynolds number at rotor inlet (Mid-span, design point) | |
Mach number at rotor inlet (Mid-span) | 0.24 |
Configuration | s (mm) | (%) |
---|---|---|
Small | 1.5 | 1.3 |
Middle | 3.0 | 2.6 |
Large | 5.0 | 4.3 |
Case | Number of Meshed Passages | Total Grid Number (Million) |
---|---|---|
PSG1 | 1 | 2.39 |
PSG3 | 3 | 7.17 |
PSG6 | 6 | 14.34 |
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Chen, X.; Koppe, B.; Lange, M.; Chu, W.; Mailach, R. Rotating Instabilities in a Low-Speed Single Compressor Rotor Row with Varying Blade Tip Clearance. Energies 2021, 14, 8369. https://doi.org/10.3390/en14248369
Chen X, Koppe B, Lange M, Chu W, Mailach R. Rotating Instabilities in a Low-Speed Single Compressor Rotor Row with Varying Blade Tip Clearance. Energies. 2021; 14(24):8369. https://doi.org/10.3390/en14248369
Chicago/Turabian StyleChen, Xiangyi, Björn Koppe, Martin Lange, Wuli Chu, and Ronald Mailach. 2021. "Rotating Instabilities in a Low-Speed Single Compressor Rotor Row with Varying Blade Tip Clearance" Energies 14, no. 24: 8369. https://doi.org/10.3390/en14248369
APA StyleChen, X., Koppe, B., Lange, M., Chu, W., & Mailach, R. (2021). Rotating Instabilities in a Low-Speed Single Compressor Rotor Row with Varying Blade Tip Clearance. Energies, 14(24), 8369. https://doi.org/10.3390/en14248369