CFD Analysis to explain the Operating Range Extension observed during Operation in Corotation Mode of a Twin-impeller Centrifugal Compressor Stage
| Autor: | Farid Bakir, Michael Deligant, Florent Ravelet, Van-Thang Nguyen, Amélie Danlos, Moises Solis, Sofiane Khelladi |
|---|---|
| Přispěvatelé: | Laboratoire d'Ingénierie des Fluides et des Systèmes Énergétiques (LIFSE), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Materials science Flow (psychology) 02 engineering and technology Computational fluid dynamics 01 natural sciences 010305 fluids & plasmas Impeller 0203 mechanical engineering 0103 physical sciences GE1-350 centrifugal compressor counter-rotating impellers ComputingMilieux_MISCELLANEOUS business.industry Centrifugal compressor Mechanics Centrifugal compressors Environmental sciences Vibration 020303 mechanical engineering & transports Twin-impeller business CFD CFD study Mécanique: Mécanique des fluides [Sciences de l'ingénieur] Gas compressor Casing Stall (engine) |
| Zdroj: | ICCHMT 2021 proceedings 13th International Conference on Computational Heat Mass and Momentum Transfer (ICCHMT 21) 13th International Conference on Computational Heat Mass and Momentum Transfer (ICCHMT 21), 2021, Paris, France. ⟨10.1051/e3sconf/202132102011⟩ E3S Web of Conferences, Vol 321, p 02011 (2021) |
| DOI: | 10.1051/e3sconf/202132102011⟩ |
| Popis: | Centrifugal compressors are widely used in many industrial applications because of their advantages. However, these turbomachines suffer at a low-flow rate from instabilities, such as rotating stall and surge. That leads to operational failure, pressure fluctuations and vibrations of the thorough system. Many mechanical solutions minimize these instabilities and expand the operating range towards low-flow rates like active control of the flow path, variable inlet guide vane and casing treatment. Currently, our team has developed a new compressor composed of a twin-impeller powered by autonomous systems. We notice the performance improvement and instabilities suppression of this compressor experimentally. In this paper, a CFD study is presented to explain some of these experimental observations by analyzing the inside of twin-impeller, the flow structures and thermodynamic characteristics at low flow rates operating in a co-rotating mode. Numerical results and experimental measurements of compressor maps are consistent. |
| Databáze: | OpenAIRE |
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