Passive Control via Slotted Blading in a Compressor Cascade at Stall Condition

سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 157

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شناسه ملی سند علمی:

JR_JAFM-6-4_012

تاریخ نمایه سازی: 5 بهمن 1400

چکیده مقاله:

This paper was conducted to explore the potential of passive control via slotted bladings in linear cascade configurations under stall condition. Through an extensive ۲D-numerical study, the effects of location, width and slope of slots were analyzed and the best configuration was identified. Based on the optimal slot, the ۳D aerodynamic performances of cascade were studied and the influence of slotted blading to control endwall flow was investigated. Both ۲D and ۳D calculations are performed on steady RANS solver with standard k-epsilon turbulence model and low Mach number regime. The total loss coefficient, turning angle and flow visualizations on the blade and end-wall surfaces are adopted to describe the different configurations. The obtained results show, for ۲D situation, that a maximum of almost ۲۸% reduction in loss coefficient had been reached and the flow turning was increased with approximately ۵۰. Concerning ۳D flow fields the slots marked their benefit and delays the boundary layer separation on both end wall and blade suction surface at mid span.

کلیدواژه ها:

High loading slotted blades ، Low Mach number ، Secondary flow ، Separation

نویسندگان

M. Ramzi

Mechanical Engineering Department, Faculty of Technology, University of Batna, Algeria

G. AbdErrahmane

Energy and Turbomachinery Laboratory, University of Tebessa, Algeria