{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T14:20:45Z","timestamp":1760710845969,"version":"build-2065373602"},"reference-count":17,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,12,18]],"date-time":"2021-12-18T00:00:00Z","timestamp":1639785600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Computation"],"abstract":"<jats:p>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 stall and surge. These phenomena cause the operation failure, pressure fluctuations and vibrations of the thorough system. Numerous mechanical solutions have been presented to 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 novel 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, an active control method is introduced by controlling the speed and rotation direction of the impellers to expand the operating range. A CFD study is then conducted to analysis flow morphology and thermodynamic characteristics based on the experimental observations at three special points. Numerical results and experimental measurements of compressor maps are consistent.<\/jats:p>","DOI":"10.3390\/computation9120143","type":"journal-article","created":{"date-parts":[[2021,12,19]],"date-time":"2021-12-19T20:41:55Z","timestamp":1639946515000},"page":"143","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Numerical Analysis of a Novel Twin-Impeller Centrifugal Compressor"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7913-0825","authenticated-orcid":false,"given":"Van Thang","family":"Nguyen","sequence":"first","affiliation":[{"name":"Arts et M\u00e9tiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France"},{"name":"Faculty of Vehicle and Energy Engineering, Le Quy Don Technical University, Hanoi 11917, Vietnam"}]},{"given":"Am\u00e9lie","family":"Danlos","sequence":"additional","affiliation":[{"name":"Arts et M\u00e9tiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1987-5558","authenticated-orcid":false,"given":"Florent","family":"Ravelet","sequence":"additional","affiliation":[{"name":"Arts et M\u00e9tiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4467-9591","authenticated-orcid":false,"given":"Michael","family":"Deligant","sequence":"additional","affiliation":[{"name":"Arts et M\u00e9tiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France"}]},{"given":"Moises","family":"Solis","sequence":"additional","affiliation":[{"name":"Arts et M\u00e9tiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2095-1087","authenticated-orcid":false,"given":"Sofiane","family":"Khelladi","sequence":"additional","affiliation":[{"name":"Arts et M\u00e9tiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0837-0260","authenticated-orcid":false,"given":"Farid","family":"Bakir","sequence":"additional","affiliation":[{"name":"Arts et M\u00e9tiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"240","DOI":"10.1115\/1.2928358","article-title":"Developments in centrifugal compressor surge Control-A technology assess-ment","volume":"116","author":"Botros","year":"1994","journal-title":"J. Turbomach."},{"key":"ref_2","first-page":"87","article-title":"Validating anti-surge control systems","volume":"8","author":"Dukle","year":"2003","journal-title":"PTQ Mag."},{"key":"ref_3","unstructured":"Willems, F.P.T. (2000). Modelling and Bounded Feedback Stabilization of Centrifugal Compressor Surge. [Ph.D. Thesis, Technische Universiteit Eindhoven]."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1115\/1.2929216","article-title":"Active suppression of rotating stall and surge in axial compressors","volume":"115","author":"Day","year":"1993","journal-title":"J. Turbomach."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"65","DOI":"10.2514\/2.5532","article-title":"Computational Analysis of Stall and Separation Control in Centrifugal Compres-sors","volume":"16","author":"Stein","year":"2000","journal-title":"J. Propuls. Power"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Koyyalamudi, V.V.N.K., and Nagpurwala, Q.H. (2016). 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