Investigations concerning the flow stabilization of backward curved centrifugal impellers at low flow rate

Lörcher, Frieder, Hub, Sandra, Sanjosé, Marlène et Moreau, Stéphane. 2022. « Investigations concerning the flow stabilization of backward curved centrifugal impellers at low flow rate ». International Journal of Turbomachinery, Propulsion and Power, vol. 7, nº 4.

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Résumé

For a backward curved centrifugal fan, reducing volume flow rate from design operating point towards part load yields an increase in noise emission together with a reduction of efficiency. The spectral content of the emerging noise emission can be characterized by a subharmonic hump with several harmonics. Based on narrow-band acoustic measurements and numerical Lattice-Boltzmann simulations, a deeper insight is sought after. Downstream unsteady flow patterns are identified to play a central role in this performance deterioration; and geometrical flow stabilization means are investigated.

Type de document:	Article publié dans une revue, révisé par les pairs
Professeur:	Professeur Sanjosé, Marlène
Affiliation:	Génie mécanique
Date de dépôt:	26 janv. 2023 23:48
Dernière modification:	25 janv. 2024 19:21
URI:	https://espace2.etsmtl.ca/id/eprint/26139

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