Recirculation casing treatment by using a vaned passage for a transonic axial-flow compressor

Khaleghi, Hossein; Tousi, Abolghasem M.; Boroomand, Masoud; Teixeira, Joao A.

doi:10.1243/09576509jpe444

Cited by 14 publications

(3 citation statements)

References 27 publications

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“…The numerical simulations for the smooth casing were validated against the experimental data in the previous publications of the present authors [36,39]. Results showed a satisfactory prediction of the compressor overall performance and flow characteristics.…”

Section: Resultsmentioning

confidence: 68%

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Parametric Study of Injection Angle Effects on Stability Enhancement of Transonic Axial Compressors

Khaleghi

Teixeira

Tousi

et al. 2008

Journal of Propulsion and Power

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An effective approach in suppressing stall is mass injection upstream of the tip of an axial flow compressor. Developing reliable injection systems for high pressure ratio compressors requires an understanding of the effects of injection parameters, for example, injection angle, on the compressor stability and performance. This paper reports on a numerical investigation of injection angle on the operability of a high-speed compressor rotor. The injection port is set to be choked for all of the injection cases. Simulations indicate that injection angle has a significant impact on stability improvement. Maximum range extension is obtained when an injection yaw angle equal to 30 deg is applied. At this injection angle, the stalling mass flow coefficient was reduced by 17.4% by using an injected mass flow equivalent to 1.55% of the baseline annulus flow. Results also indicate that the best injection case creates an incidence angle of about 0 deg over the tip of the blade and adds the highest momentum in the relative frame of reference.Nomenclature A = area a = annulus adb = adiabatic amb = ambient DF = diffusion factor in = blade inlet j = jet out = blade outlet P 0 = total pressure rel = relative frame of reference T 0 = total temperature t = tip U, V = velocity x = axial component y = nondimensional wall distance = efficiency = tangential component = momentum = density = solidity = flow coefficient

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Section: Resultsmentioning

confidence: 68%

“…Thus, the injector is located radially between the tip of the blade and the shroud. A modified casing is used to treat the injection port as an inlet boundary [36]. The injector configuration is presented in Fig.…”

Section: Geometrymentioning

confidence: 99%

Parametric Study of Injection Angle Effects on Stability Enhancement of Transonic Axial Compressors

Khaleghi

Teixeira

Tousi

et al. 2008

Journal of Propulsion and Power

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“…They concluded that increasing the circumferential mass-averaged axial velocity at the rotor tip is the key to improving the compressor's stability. An end-wall recirculation scheme with an anti-swirl vaned passage was tested by Khaleghi et al [6] on the high-speed fan, NASA Rotor 67. The scheme was able to increase the stable range extension with a very small penalty in efficiency.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of a Dual-Bleeding Recirculation Channel to Enhance Operating Stability of a Transonic Axial Compressor

Vuong

Kim

2021

Energies

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The present work performed a comprehensive investigation to find the effects of a dual-bleeding port recirculation channel on the aerodynamic performance of a single-stage transonic axial compressor, NASA Stage 37, and optimized the channel’s configuration to enhance the operating stability of the compressor. The compressor’s performance was examined using three parameters: The stall margin, adiabatic efficiency, and pressure ratio. Steady-state three-dimensional Reynolds-averaged Navier–Stokes analyses were performed to find the flow field and aerodynamic performance. The results showed that the addition of a bleeding channel increased the recirculation channel’s stabilizing effect compared to the single-bleeding channel. Three design variables were selected for optimization through a parametric study, which was carried out to examine the influences of six geometric parameters on the channel’s effectiveness. Surrogate-based design optimization was performed using the particle swarm optimization algorithm coupled with a surrogate model based on the radial basis neural network. The optimal design was found to increase the stall margin by 51.36% compared to the case without the recirculation channel with only 0.55% and 0.28% reductions in the peak adiabatic efficiency and maximum pressure ratio, respectively.

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Numerical investigation of effect of inlet swirl and total-pressure distortion on performance and stability of an axial transonic compressor

2016

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Recirculation casing treatment by using a vaned passage for a transonic axial-flow compressor

Cited by 14 publications

References 27 publications

Parametric Study of Injection Angle Effects on Stability Enhancement of Transonic Axial Compressors

Parametric Study of Injection Angle Effects on Stability Enhancement of Transonic Axial Compressors

Design Optimization of a Dual-Bleeding Recirculation Channel to Enhance Operating Stability of a Transonic Axial Compressor

Numerical investigation of effect of inlet swirl and total-pressure distortion on performance and stability of an axial transonic compressor

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