... Abstract Vortex induced vibrations (VIV) may be developed in the sag-bend area of steel catenary risers (SCRs) and lazy wave risers (SLWRs) induced by the top motions. There is lack of reliable tools to predict VIV responses in such oscillatory flow conditions in the riser design. A time-domain...

... not only due Risers are an integral part of an offshore oil and gas exploration structures, and that they are prone to vortex-induced vibration to their potentially large widths that can overstretch a structural (VIV). Although several studies are conducted to analyze the VIV characteristics of risers...

... rather than intermediate supports to suppress VIV, since the latter proved not to be a long-term solution, (2) using partial rather than full strake coverage of spans and developing tools to quantify the level of strake coverage that is required, (3) improving estimates of soil stiffness and damping...

... when you expected it to. situations were calculations results does not match expectations. A prime example of this is during a free span assessment based Keywords: Free span, VIV, DNVGL-RP-F105 on surveyed pipeline configuration and the fatigue life capacity calculated is much smaller than the current...

... design verification includes riser sizing, adjacent riser interference, cathodic protection, dynamic strength analysis, Vortex-Induced Vibration (VIV) analysis, wave motion fatigue analysis, semi-submersible Vortex-Induced Motion (VIM) fatigue analysis, and riser installation. Sensitivity study...

...Abstract Abstract Vortex-induced vibration (VIV) is one of the most critical issues in deepwater developments due to its resultant fatigue damage to subsea structures such as risers, pipelines and jumpers. Although VIV effects on slender bodies have been comprehensively studied over decades...

...Abstract Abstract This paper presents the experimental investigation of vortex-induced vibrations (VIV) of a flexibly mounted circular cylinder in combined current and wave flows. The same experimental setup has previously been used in our previous study (OMAE2020-18161) on VIV in regular waves...

...Abstract Abstract A data-driven hydrodynamic force model is developed to model the dynamic forces on an oscillating circular cylinder for flow conditions where Vortex-Induced-Vibrations (VIV) are known to occur. The model is developed for use in future control systems to improve VIV-based...

...TIME DOMAIN VIV ANALYSIS TOOL VIVANA-TD: VALIDATIONS AND IMPROVEMENTS Jie Wu1, Jingzhe Jin, Decao Yin, Halvor Lie, Elizabeth Passano SINTEF Ocean Trondheim, Norway Svein Sævik NTNU Trondheim, Norway Michael A Tognarelli BP America Production Houston, USA Guttorm Grytøyr Equinor Oslo, Norway Torgrim...

...A NEW RIGID JUMPER VIV RESPONSE MODEL: JIP DEVELOPMENT Aravind Nair1, Vivek Jaiswal1, Olav Fyrileiv2, Knut Vedeld2, Haining Zheng3, Jerry Huang3, Michael Tognarelli4, Rafael Goes5, Roberto Bruschi6, Lorenzo Bartolini6, Luigino Vitali6 1DNV GL, USA 2DNV GL, Norway 3ExxonMobil, USA 4BP, USA...

..., riser Vortex-Induced Vibration (VIV) due to ambient current, and Vortex-Induced Motion (VIM) of a semi-submersible platform. Fatigue contribution from installation is also considered and included in the combined fatigue damage calculation. The long 1 Contact author: Yongming.cheng@keppelfloatec.com term...

... by Aronsen (2007), the in-line VIV response of partially strake-covered pipeline spans is calculated. It is found that as little as 10% strake coverage at the optimal location effectively suppresses pure in-line VIV. Further advantages of strakes rather than intermediate supports to suppress in-line VIV...

..., offshore platforms will move periodically in the water under the combined effects of waves, currents and winds. The relatively oscillatory flow is generated between the riser connected to the platform and the water. Vortex-induced Vibration (VIV) features of a single cylinder in the oscillatory flow...

... simulation to get the vibration law of the corresponding feature points and compare it with the experimental results. The results indicate that the numerical analysis reasonably match with experimental results. flexible catenary risers mid-line buoyancy system VIV comparative experiment Study...

... and employ strategies to enhance damping. This paper describes a methodology for assessing subsea jumpers for vibration induced fatigue. The method employs a combination of transient dynamic, harmonic and modal finite element analysis with the VIV tool SHEAR7. The methodology is able to show generally...

... Subsea jumpers are susceptible to in-line and/or cross-flow vortex induced vibration (VIV) fatigue damage due to sea bottom currents. However, there is no proven industry standard design analysis methodology currently available specifically for assessing subsea jumper VIV response. In 2012...

... ABSTRACT This paper presents work using commercially available computational fluid dynamics (CFD) software that provides evidence of the effect that the drag crisis has on the dynamic response of a bluff object excited by vortex induced vibration (VIV) from normal flow. Results are presented of simulations...

... 01 11 2011 In this paper, VIV of a flexible model within full scale Re number regime are studied. The experiments were carried out in the towing tank by towing the flexible model with a constant forward speed. The bending stiffness of the flexible model was specially designed...

... and refinery piping. Currently, there are limited guidelines specifically developed for vibration assessment for subsea piping. For subsea pipework, additional guidelines may be necessary to check for possible interaction between current induced VIV, wave induced VIV (for shallow waters) and slugging...

... 10 01 2011 VIVA is a vortex induced vibration (VIV) analysis software that to date has not been widely used as a design tool in the offshore oil and gas industry. VIVA employs a hydrodynamic database that has been benchmarked and calibrated against test data [1]. It offers relatively...