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CFD Analysis to explain the Operating range extension observed during Operation in Co-rotating Mode of a Twin-impeller Centrifugal Compressor

Article dans une revue avec comité de lecture
Auteur
NGUYEN, Van-Thang
521372 Le Quy Don Technical University [LQDTU]
DANLOS, Amelie
ccRAVELET, Florent
1003528 Laboratoire d'Ingénierie des Fluides et des Systèmes Énergétiques [LIFSE]
ccDELIGANT, Michael
SOLIS, Moises
ccKHELLADI, Sofiane
ccBAKIR, Farid

URI
http://hdl.handle.net/10985/21378
DOI
10.1051/e3sconf/202132102011
Date
2021
Journal
E3S Web of Conferences

Résumé

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.

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  • Laboratoire Ingénierie des fluides Systèmes énergétiques (LIFSE)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Numerical Analysis of a Novel Twin-Impeller Centrifugal Compressor 
    Article dans une revue avec comité de lecture
    NGUYEN, Van Thang; DANLOS, Amélie; ccRAVELET, Florent; ccDELIGANT, Michael; SOLIS, Moises; ccKHELLADI, Sofiane; ccBAKIR, Farid (MDPI AG, 2021)
    Centrifugal compressors are widely used in many industrial fields such as automotive, aviation, aerospace. However, these turbomachines suffer instability phenomenon when the flow rate is too high or too low, called rotating ...
  • Experimental study of a novel centrifugal compressor with two successive and independent rotors 
    Article dans une revue avec comité de lecture
    NGUYEN, Van-Thang; ABED, Cheikh Brahim; DANLOS, Amelie; ccRAVELET, Florent; PARIDAENS, Richard; ccDELIGANT, Michael; ccKHELLADI, Sofiane; ccBAKIR, Farid (American Society of Mechanical Engineers, 2021)
    The present study deals with a low pressure-ratio centrifugal compressor consisting of two counter-rotating rotors called a Counter-Rotating Centrifugal Compressor (CRCC). The design method based on the loss model was ...
  • Etude numérique des gains de performances et de capacité d'aspiration apportés par un étage axial contra-rotatif par rapport à une pompe mono-rotor. 
    Communication avec acte
    DANLOS, Amélie; SOLIS, Moises; ccRAVELET, Florent; ccBAKIR, Farid (2013)
    This study deals with the development of an efficient method of design for subsonic conter-rotating axial flow turbomachineries. From specifications of a reference axial pump with only one rotor, two configurations of ...
  • Experimental and Numerical Analysis of the Flow Inside a Configuration Including an Axial Pump and a Tubular Exchanger 
    Communication avec acte
    SOLIS, Moises; ccRAVELET, Florent; ccBAKIR, Farid; ccKHELLADI, Sofiane (ASME, 2010)
    In centrifugal and axial pumps, the flow is characterized by a turbulent and complex behavior and also by physical mechanisms such as cavitation and pressure fluctuations that are mainly due to the strong interactions ...
  • POD study of aerated cavitation in a venturi nozzle 
    Communication avec acte
    TOMOV, Petar; DANLOS, Amélie; ccRAVELET, Florent; ccSARRAF, Christophe; ccBAKIR, Farid; ccKHELLADI, Sofiane (IOP sciences conference series, 2015)
    The fact of injecting bubbles into a cavitating flow influences typical cavitating behavior. Cavitation and aerated cavitation experiments has been carried out on a symmetrical venturi nozzle with convergent/divergent ...

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