Prediction of vortex-induced vibration response of deep sea top-tensioned riser in sheared flow considering parametric excitations

• Autorzy: Gao Guanghai , Cui Yunjing , Qiu Xingqi

Identyfikatory

DOI

10.2478/pomr-2020-0026

• Języki publikacji: EN

Abstrakty

EN

It is widely accepted that vortex-induced vibration (VIV) is a major concern in the design of deep sea top-tensioned risers, especially when the riser is subjected to axial parametric excitations. An improved time domain prediction model was proposed in this paper. The prediction model was based on classical van der Pol wake oscillator models, and the impacts of the riser in-line vibration and vessel heave motion were considered. The finite element, Newmark-β and Newton‒Raphson methods were adopted to solve the coupled nonlinear partial differential equations. The entire numerical solution process was realised by a self-developed program based on MATLAB. Comparisons between the numerical calculation and the published experimental test were conducted in this paper. The in-line and cross-flow VIV responses of a real size top-tensioned riser in linear sheared flow were analysed. The effects of the vessel heave amplitude and frequency on the riser VIV were also studied. The results show that the vibration displacements of the riser are larger than the case without vessel heave motion. The vibration modes and frequencies of the riser are also changed due to the vessel heave motion

Słowa kluczowe

EN

top-tensioned riser; vortex-induced vibration; wake oscillator model; time-varying axial tension force; sheared flow

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2020
• Tom: nr 2
• Strony: 48--57
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Gao Guanghai

• China University of Petroleum (East China) No. 66 , West Changjiang Road Huangdao District 266580 Qingdao, CHINA

autor

Cui Yunjing

• China University of Petroleum (East China) No. 66 , West Changjiang Road Huangdao District 266580 Qingdao, CHINA

autor

Qiu Xingqi

• China University of Petroleum (East China) No. 66 , West Changjiang Road Huangdao District 266580 Qingdao, CHINA

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).