Dynamic characteristics of the radial clearance flow between axially oscillating rotational disk and stationary disk

Hironori Horiguchi, Yoshinori Ueno, Koutaro Takahashi, Kazuyoshi Miyagawa, Yoshinobu Tsujimoto

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

Abstract

Dynamic characteristics of the clearance flow between an axially oscillating rotational disk and a stationary disk were examined by experiments and computations based on a bulk flow model. In the case without pressure fluctuations at the inlet and outlet of the clearance, parallel and contracting flow paths had an effect to stabilize the axial oscillation of the rotating disk. The enlarged flow path had an effect to destabilize the axial oscillation due to the negative damping and stiffness for outward and inward flows, respectively. It was shown that the fluid force can be decomposed into the component caused by the inlet or outlet pressure fluctuation without the axial oscillation and that due to the axial oscillation without the inlet or outlet pressure fluctuation. A method to predict the stiffness and damping coefficients is proposed for general cases when the device is combined with an arbitrary flow system.

Original languageEnglish
Title of host publicationProceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
Pages243-251
Number of pages9
EditionPART A
DOIs
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009 - Vail, CO, United States
Duration: 2009 Aug 22009 Aug 6

Publication series

NameProceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
NumberPART A
Volume1

Conference

Conference2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009
CountryUnited States
CityVail, CO
Period09/8/209/8/6

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

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    Horiguchi, H., Ueno, Y., Takahashi, K., Miyagawa, K., & Tsujimoto, Y. (2009). Dynamic characteristics of the radial clearance flow between axially oscillating rotational disk and stationary disk. In Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009 (PART A ed., pp. 243-251). (Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009; Vol. 1, No. PART A). https://doi.org/10.1115/FEDSM2009-78219