Experimental study of flow inside a centrifugal fan using magnetic resonance velocimetry

Davis W. Hoffman, Laura Villafañe, Christopher J. Elkins, John K. Eaton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Three-dimensional, three-component time-averaged velocity fields have been measured within a low-speed centrifugal fan with forward curved blades. The model investigated is representative of fans commonly used in automotive HVAC applications. The flow was analyzed at two Reynolds numbers for the same ratio of blade rotational speed to outlet flow velocity. The flow patterns inside the volute were found to have weak sensitivity to Reynolds number. A pair of counter-rotating vortices evolve circumferentially within the volute with positive and negative helicity in the upper and lower regions, respectively. Measurements have been further extended to capture phase-resolved flow features by synchronizing the data acquisition with the blade passing frequency. The mean flow field through each blade passage is presented including the jet-wake structure extending from the blade and the separation zone on the suction side of the blade leading edge.

Original languageEnglish (US)
Title of host publicationAircraft Engine; Fans and Blowers; Marine; Honors and Awards
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791858547
DOIs
StatePublished - Jan 1 2019
EventASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, GT 2019 - Phoenix, United States
Duration: Jun 17 2019Jun 21 2019

Publication series

NameProceedings of the ASME Turbo Expo
Volume1

Conference

ConferenceASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, GT 2019
CountryUnited States
CityPhoenix
Period6/17/196/21/19

ASJC Scopus subject areas

  • Engineering(all)

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