Stall Margin Improvement in a Centrifugal Compressor through Inducer Casing Treatment [PDF]
International Journal of Rotating Machinery, 2016 The increasing trend of high stage pressure ratio with increased aerodynamic loading has led to reduction in stable operating range of centrifugal compressors with stall and surge initiating at relatively higher mass flow rates.
V. V. N. K. Satish Koyyalamudi +1 more
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Study on the stability enhancement mechanism of a high-speed axial compressor under paired swirl distortion. [PDF]
Sci RepSerpentine and buried air intake configurations are widely employed in modern fighter aircraft, which induces significant swirl distortion at the inlet and adversely affects compressor operational stability.
Cheng B, Li Y, Yin Z, Yu Y, Liu J.
europepmc +2 more sources
Enhancement of aerodynamic performance of axial compressors utilizing natural aspiration through optimized casing circumferential slot. [PDF]
Sci RepThis paper presents results of aerodynamic enhancement of axial compressors utilizing optimum natural aspiration through a circumferential slot made within the casing wall upstream the rotor blades row.
Nejad PG, Zenouz RT.
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Stall Margin Improvement in an Axial Compressor by Continuous and Pulsed Tip Injection
International Journal of Turbomachinery, Propulsion and Power, 2022 Stall and surge are strong limitations in the operating range of compressors and thus one of the major limits of jet engine performance. A promising way to push the stability limit of compression machines is to inject a small amount of flow at the blade tip to alter the physical mechanism responsible for stall onset.
Pierric Joseph +2 more
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Investigating the cooling effect of the inlet flow on the axial compressor performance in different operating conditions. [PDF]
Sci RepIn this article, the compressor performance in wet compression conditions is compared with that of dry compression. Wet condensation has been done through droplets with one-micron diameter and a three percent mass flow rate.
Abbasi S, Salmani M.
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Determination of Serviceability Limits of a Turboshaft Engine by the Criterion of Blade Natural Frequency and Stall Margin [PDF]
Aerospace, 2019 This paper analyses the health and performance of 12–stage axial compressor of the TV3–117VM/VMA turboshaft operated in a desert environment. The results of the dimensional control of 4,800 worn blades are analysed to model the wear process. Operational experience is used to assess the effectiveness of an Inlet Particle Separator.
Yaroslav Dvirnyk +2 more
exaly +4 more sources
Algorithm of axial compressor stall warning based on BP neural network and fuzzy logic [PDF]
MATEC Web of Conferences, 2022 Stall warning of axial compressor is very challenging and the existing warning margin is not enough. A algorithm based on BP neural network fusion fuzzy logic is proposed.
Qiu Xiaohong, Chen Jiali
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Energies, 2021 Axial slot casing treatment is a common method to extend the stall margin of a compressor. Based on the mechanism of unsteady flow control, this paper redesigns axial slots with large circumferential interval and small opening area. To test the effect of
Zepeng Liu, Guoping Huang, Omer Musa
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Engineering Applications of Computational Fluid Mechanics, 2022 Counter-rotating axial-flow compressor (CRAC) is a promising technology to increase the thrust-to-weight ratio of aero-engines. Self-recirculating casing treatment (SRCT) is selected to explore its stability enhancement capacity in the CRAC.
Yanchao Guo +3 more
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Stability Enhancement of a Single-Stage Transonic Axial Compressor Using Inclined Oblique Slots
Energies, 2021 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.
Tien-Dung Vuong, Kwang-Yong Kim
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