Investigation of the mixed flow turbine performance under inlet pulsating flow conditions

Mohammed Hamel; Miloud Abidat; Sid Ali Litim

doi:10.1016/j.crme.2012.01.004

Investigation of the mixed flow turbine performance under inlet pulsating flow conditions

Mohammed Hamel ¹ ; Miloud Abidat ¹ ; Sid Ali Litim ²

¹ Laboratoire de mécanique appliquée, faculté de génie mécanique, université des sciences et de la technologie dʼOran – Mohamed-Boudiaf, BP 1505, Oran El MʼNaouer, 31000, Oran, Algeria
² École normale supérieure de lʼenseignement technique dʼOran, Oran, Algeria

Comptes Rendus. Mécanique, Volume 340 (2012) no. 3, pp. 165-176.

Résumé

Turbochargers are widely used in Diesel engines as a means of increasing the output power. Most of them are fitted with radial or mixed flow turbines. In applications where high boost pressure is required, radial turbines are replaced by mixed flow turbines which can achieve a maximum efficiency at a lower value of blade speed to isentropic expansion velocity ratio than the usual 0.7 (for radial turbines). This study, performed with the ANSYS-CFX software, presents a numerical performance prediction of a mixed flow turbine under inlet pulsating flow conditions. In addition, the influence of the pulse frequency is studied and the numerical results are compared with those of a one-dimensional model and experimental data.

Reçu le : 2011-05-25
Accepté le : 2012-01-31
Publié le : 2012-02-11

DOI : 10.1016/j.crme.2012.01.004

Mots clés : Computational fluid mechanics, Turbulence, Mixed flow turbine, Performance, Turbocharger, Efficiency, Pulsating flow

Affiliations des auteurs :

Mohammed Hamel ¹ ; Miloud Abidat ¹ ; Sid Ali Litim ²

¹ Laboratoire de mécanique appliquée, faculté de génie mécanique, université des sciences et de la technologie dʼOran – Mohamed-Boudiaf, BP 1505, Oran El MʼNaouer, 31000, Oran, Algeria
² École normale supérieure de lʼenseignement technique dʼOran, Oran, Algeria

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Mohammed Hamel; Miloud Abidat; Sid Ali Litim. Investigation of the mixed flow turbine performance under inlet pulsating flow conditions. Comptes Rendus. Mécanique, Volume 340 (2012) no. 3, pp. 165-176. doi : 10.1016/j.crme.2012.01.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2012.01.004/

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