TY - GEN
T1 - A PARAMETRIC STUDY on the EFFECT of CASING TREATMENT SLOTS on PERFORMANCE ENHANCEMENT of A SINGLE STAGE AXIAL FLOW COMPRESSOR
AU - Amin, Gautham A.
AU - Salunkhe, Pramod B.
AU - Kini, Chandrakanth R.
N1 - Publisher Copyright:
© 2021 by ASME.
PY - 2021
Y1 - 2021
N2 - This paper numerically investigates the effect of slots on the performance of a highly subsonic axial flow compressor. The axial flow compressor consisting of 21 rotor blades with NACA 65 series blade profile was used for the simulations. The present results were obtained using different turbulence models and shear stress transport model was found to be the best one. Studies were conducted to determine the influence of length, depth and skew angle of the slot on the compressor performance. The slot width and centre-to-centre distance between the successive slots were maintained at 6.3% Ca and 11% Ca, respectively. The present study was carried out at different slot lengths (0 to 100% of axial chord, 20 to 100% of axial chord and 40 to 100% of axial chord), slot depths (7.9, 11 and 15.7% Ca) and skew angles (0o, 30o, 45 and 60o). The slot length of 20 to 100% of Ca, depth of 15.7% Ca and skew angle of 60o resulted in the best compressor performance leading to 22.1% stall margin improvement. Subsequently, flow characteristics were studied without and with slots.
AB - This paper numerically investigates the effect of slots on the performance of a highly subsonic axial flow compressor. The axial flow compressor consisting of 21 rotor blades with NACA 65 series blade profile was used for the simulations. The present results were obtained using different turbulence models and shear stress transport model was found to be the best one. Studies were conducted to determine the influence of length, depth and skew angle of the slot on the compressor performance. The slot width and centre-to-centre distance between the successive slots were maintained at 6.3% Ca and 11% Ca, respectively. The present study was carried out at different slot lengths (0 to 100% of axial chord, 20 to 100% of axial chord and 40 to 100% of axial chord), slot depths (7.9, 11 and 15.7% Ca) and skew angles (0o, 30o, 45 and 60o). The slot length of 20 to 100% of Ca, depth of 15.7% Ca and skew angle of 60o resulted in the best compressor performance leading to 22.1% stall margin improvement. Subsequently, flow characteristics were studied without and with slots.
UR - https://www.scopus.com/pages/publications/85122350279
UR - https://www.scopus.com/pages/publications/85122350279#tab=citedBy
U2 - 10.1115/GTINDIA2021-76007
DO - 10.1115/GTINDIA2021-76007
M3 - Conference contribution
AN - SCOPUS:85122350279
T3 - Proceedings of ASME 2021 Gas Turbine India Conference, GTINDIA 2021
BT - Proceedings of ASME 2021 Gas Turbine India Conference, GTINDIA 2021
PB - American Society of Mechanical Engineers(ASME)
T2 - ASME 2021 Gas Turbine India Conference, GTINDIA 2021
Y2 - 2 December 2021 through 3 December 2021
ER -