Unsteady behavior of a radial fan in a pulsating flow field

Saki Shiratori, Yohei Nakamura, Kensuke Yasui, Sho Yamada, Kazuyoshi Miyagawa

Research output: Contribution to conferencePaper

Abstract

The unsteady behavior of a radial fan in a pulsating flow field was studied experimentally. In a pulsating flow, compressor and turbine operating points do not match their steady performance curve, but exhibit a hysteresis loop instead. The shape of the hysteresis loop depends on the pulsating frequency. Measurements to calculate the Bode diagram of the fan and the phase lag of pressure and flow rate indicate that the phase lag controls the hysteresis loop. Moreover, to clarify the influence of air column resonance, the diffuser pump test was performed as a basic study. Computational fluid dynamics (CFD) analysis of the radial fan was carried out, and its results were compared with the experiment results. The unsteady curve calculated by CFD formed a hysteresis loop as observed in the experiment results.

Original languageEnglish
Publication statusPublished - 2019 Jan 1
Event16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016 - Honolulu, United States
Duration: 2016 Apr 102016 Apr 15

Conference

Conference16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016
CountryUnited States
CityHonolulu
Period16/4/1016/4/15

Fingerprint

Hysteresis loops
Fans
Flow fields
Computational fluid dynamics
Bode diagrams
Phase control
Dynamic analysis
Compressors
Turbines
Experiments
Flow rate
Pumps
Air

Keywords

  • Hysteresis loop
  • Pulsating flow
  • Radial fan

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Shiratori, S., Nakamura, Y., Yasui, K., Yamada, S., & Miyagawa, K. (2019). Unsteady behavior of a radial fan in a pulsating flow field. Paper presented at 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016, Honolulu, United States.

Unsteady behavior of a radial fan in a pulsating flow field. / Shiratori, Saki; Nakamura, Yohei; Yasui, Kensuke; Yamada, Sho; Miyagawa, Kazuyoshi.

2019. Paper presented at 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016, Honolulu, United States.

Research output: Contribution to conferencePaper

Shiratori, S, Nakamura, Y, Yasui, K, Yamada, S & Miyagawa, K 2019, 'Unsteady behavior of a radial fan in a pulsating flow field' Paper presented at 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016, Honolulu, United States, 16/4/10 - 16/4/15, .
Shiratori S, Nakamura Y, Yasui K, Yamada S, Miyagawa K. Unsteady behavior of a radial fan in a pulsating flow field. 2019. Paper presented at 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016, Honolulu, United States.
Shiratori, Saki ; Nakamura, Yohei ; Yasui, Kensuke ; Yamada, Sho ; Miyagawa, Kazuyoshi. / Unsteady behavior of a radial fan in a pulsating flow field. Paper presented at 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016, Honolulu, United States.
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