Using Tip Injection to Stability Enhancement of a Transonic Centrifugal Impeller with Inlet Distortion
Publish place: Journal of Applied Fluid Mechanics، Vol: 15، Issue: 6
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
View: 124
This Paper With 10 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JAFM-15-6_014
تاریخ نمایه سازی: 2 مهر 1401
Abstract:
This paper aims to understand the effects of circumferential inlet distortion and tip injection on a transonic impeller performance and flow field. For distorted inflow, the impeller is subjected to a stationary ۱۲۰-degrees circumferential total pressure distortion. Full annulus unsteady three-dimensional analysis has been used to study the inlet distortion and tip injection effects on the impeller performance, stability and flow field. The results show that the circumferential inlet distortion reduces the impeller total pressure ratio and adiabatic efficiency; however, it has no significant impact on the safe operating range. Unlike the inlet distortion, the tip injection considerably increases the operating range. According to the results, the distortion and tip injection effect on the compressor performance is mainly due to changes in tip leakage flow. The inlet distortion has unfavorable influences on the flow field, especially near the impeller tip; however, the tip injection ameliorates the flow field in this region. In both the clean and distorted inflow, the tip injection causes downstream shock transmission, weakening the shock-tip leakage interaction. Hence, stall inception is postponed, and the impeller stability is improved in the presence of the tip injection.
Keywords:
Authors
Z. Jahani
Department of Aerospace Engineering, Amirkabir University of Technology, ۱۵۸۷۵-۴۴۱۳, Tehran, Iran
H. Khaleghi
Department of Aerospace Engineering, Amirkabir University of Technology, ۱۵۸۷۵-۴۴۱۳, Tehran, Iran
S. Tabejamaat
Department of Aerospace Engineering, Amirkabir University of Technology, ۱۵۸۷۵-۴۴۱۳, Tehran, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :