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http://dx.doi.org/10.5293/kfma..2011.14.5.069

Rotordynamic Transient Analysis of Vertical Sea Water Lift Pump for FPSO Deep Well  

Kim, Byung-Ok (한국기계연구원 시스템다이나믹스연구실)
Yang, Sung-Jin (STX 종합기술원)
Lee, Myung-Ho (STX Metal 주식회사)
Publication Information
Abstract
This paper deals with the detail rotordynamic analysis for the vertical rotor system as development of vertical sea water lift pump for FPSO deep well. In a vertical rotor system, since linearized stiffness and damping coefficients of fluid film bearing are no longer be valid, hence the transient response analysis considering a fluid film force for every journal position in the bearing needs to be required. In this study, the transient response analysis of the proposed vertical pump rotor system was carried out in dry-run and wet-run conditions, respectively. The results show that orbital vibration responses of the rotor system remain stable at rated speed and thereby operating reliability of the vertical rotor system is confirmed. To overcome complexity of calculation pr ocedure and time consuming calculation of transient analysis, the calculating technique of steady-state response analysis is also proposed. The results of steady-state response obtained by applying the proposed technique to the rotor system are good agreement with the reference results, that is, transient responses.
Keywords
Rotordynamics; Vertical pump; Transient analysis; Annular seal; Critical speed map;
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Times Cited By KSCI : 1  (Citation Analysis)
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