Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique Slots
A casing treatment using inclined oblique slots (INOS) is proposed to improve the stability of the single-stage transonic axial compressor, NASA Stage 37, during operation. The slots are installed on the casing of the rotor blades. The aerodynamic performance was estimated using three-dimensional st...
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Online Access: | https://www.mdpi.com/1996-1073/14/9/2346 |
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doaj-04f814fe7b654b4a9297641751b1bc522021-04-21T23:02:56ZengMDPI AGEnergies1996-10732021-04-01142346234610.3390/en14092346Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique SlotsTien-Dung Vuong0Kwang-Yong Kim1Department of Mechanical Engineering, Inha University, Incheon 22212, KoreaDepartment of Mechanical Engineering, Inha University, Incheon 22212, KoreaA casing treatment using inclined oblique slots (INOS) is proposed to improve the stability of the single-stage transonic axial compressor, NASA Stage 37, during operation. The slots are installed on the casing of the rotor blades. The aerodynamic performance was estimated using three-dimensional steady Reynolds-Averaged Navier-Stokes analysis. The results showed that the slots effectively increased the stall margin of the compressor with slight reductions in the pressure ratio and adiabatic efficiency. Three geometric parameters were tested in a parametric study. A single-objective optimization to maximize the stall margin was carried out using a Genetic Algorithm coupled with a surrogate model created by a radial basis neural network. The optimized design increased the stall margin by 37.1% compared to that of the smooth casing with little impacts on the efficiency and pressure ratio.https://www.mdpi.com/1996-1073/14/9/2346axial compressorinclined oblique slotsRANS analysisoptimizationstall margingenetic algorithm |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tien-Dung Vuong Kwang-Yong Kim |
spellingShingle |
Tien-Dung Vuong Kwang-Yong Kim Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique Slots Energies axial compressor inclined oblique slots RANS analysis optimization stall margin genetic algorithm |
author_facet |
Tien-Dung Vuong Kwang-Yong Kim |
author_sort |
Tien-Dung Vuong |
title |
Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique Slots |
title_short |
Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique Slots |
title_full |
Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique Slots |
title_fullStr |
Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique Slots |
title_full_unstemmed |
Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique Slots |
title_sort |
stability enhancement of a single-stage transonic axial compressor using inclined oblique slots |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2021-04-01 |
description |
A casing treatment using inclined oblique slots (INOS) is proposed to improve the stability of the single-stage transonic axial compressor, NASA Stage 37, during operation. The slots are installed on the casing of the rotor blades. The aerodynamic performance was estimated using three-dimensional steady Reynolds-Averaged Navier-Stokes analysis. The results showed that the slots effectively increased the stall margin of the compressor with slight reductions in the pressure ratio and adiabatic efficiency. Three geometric parameters were tested in a parametric study. A single-objective optimization to maximize the stall margin was carried out using a Genetic Algorithm coupled with a surrogate model created by a radial basis neural network. The optimized design increased the stall margin by 37.1% compared to that of the smooth casing with little impacts on the efficiency and pressure ratio. |
topic |
axial compressor inclined oblique slots RANS analysis optimization stall margin genetic algorithm |
url |
https://www.mdpi.com/1996-1073/14/9/2346 |
work_keys_str_mv |
AT tiendungvuong stabilityenhancementofasinglestagetransonicaxialcompressorusinginclinedobliqueslots AT kwangyongkim stabilityenhancementofasinglestagetransonicaxialcompressorusinginclinedobliqueslots |
_version_ |
1721515395961061376 |