High-mode vortex-induced vibration of stay cables: monitoring, cause investigation, and mitigation

2022 ◽  
pp. 116758
Author(s):  
Sunjoong Kim ◽  
Sejin Kim ◽  
Ho-Kyung Kim
Keyword(s):  
High Mode ◽  
Vortex Induced Vibration ◽  
Stay Cables

Cause investigation of high-mode vortex-induced vibration in a long-span suspension bridge

2019 ◽  
Vol 16 (1) ◽  
pp. 84-93 ◽  
Author(s):  
You Chan Hwang ◽  
Sunjoong Kim ◽  
Ho-Kyung Kim
Keyword(s):  
Suspension Bridge ◽  
High Mode ◽  
Vortex Induced Vibration ◽  
Long Span

scholarly journals High Mode Vortex Induced Vibration (VIV) Experiments on a Large-Scale Riser

2007 ◽  
Author(s):  
David Murrin ◽  
Martin Ordonez ◽  
Gillian Stone ◽  
Neil Bose ◽  
Wei Qiu
Keyword(s):  
Large Scale ◽  
High Mode ◽  
Vortex Induced Vibration

scholarly journals Partial Strake Coverage Vortex-Induced Vibration Benchmarking Using SHEAR7v4.5

2009 ◽  
Author(s):  
Hayden Marcollo ◽  
J. Kim Vandiver
Keyword(s):  
Experimental Data ◽  
Shear Flow ◽  
Laboratory Data ◽  
Experimental Results ◽  
High Mode ◽  
Flow Conditions ◽  
Vortex Induced Vibration ◽  
Future Improvement

A VIV benchmarking study was undertaken using SHEAR7v4.5 against NDP high mode VIV response laboratory data. The purpose of which was to derive an improved set of modeling parameters for partial strake coverage cases whilst not comprising previous accuracy of shear flow bare riser response predictions. Fifty percent (50%) partial strake coverage experimental data was utilized from both uniform and shear flow conditions while bare data was also included in the activity for reference purposes. The results showed that such an activity can derive an improved set of modeling parameters that significantly improve the ability to match experimental results and also highlight where future improvement efforts can be targeted.

Simulating High Mode Vortex Induced Vibration of a Riser in Linearly Sheared Current using an Empirical Time domain Model

2020 ◽  
pp. 1-15
Author(s):  
Sang Woo Kim ◽  
Svein Sævik ◽  
Jie Wu ◽  
Bernt J. Leira
Keyword(s):  
Time Domain ◽  
Deep Sea ◽  
Oil And Gas ◽  
Response Prediction ◽  
Domain Model ◽  
High Mode ◽  
Vortex Induced Vibration ◽  
Use Of Time ◽  
Offshore Oil And Gas ◽  
The Time Domain

Abstract As the development of offshore oil and gas continues to move into deeper waters, the risers connecting the seabed infrastructure to the offshore platform are getting longer. This means that Vortex-induced vibration (VIV) may occur at different frequencies along the riser due to current variation, making the VIV prediction challenging. To increase the VIV prediction accuracy, an empirical time domain VIV model has been developed. The advantage of the model is that it can account for structural non-linearities such as variable tension and time-varying flow. The robustness of the time domain VIV model has been verified with respect to the several tests, but the length/diameter (L/D) ratio of the risers used in the experiments has so far been relatively small, and the response mode number accordingly low. Therefore, additional validation is needed to understand the uncertainties for the prediction of VIV for deep-sea riser systems at high mode order. The purpose of the present study was to evaluate the use of time domain model for high mode VIV response prediction of deep-sea riser systems. This was done by a comparison study applying the Hanøytangen high mode VIV test data. The main comparison was made regarding the dominating frequency and fatigue damage estimation. For selected empirical parameters, the model demonstrated a good correlation with the experiments. However, the simplified riser model which was utilized in the simulations caused some discrepancies between numerical simulations and the experimental results, which needs to be further investigated.

scholarly journals Reliability Based Factors of Safety for VIV Fatigue Using NDP Riser High Mode VIV Tests

2011 ◽  
Author(s):  
E. Fontaine ◽  
H. Marcollo ◽  
K. Vandiver ◽  
M. Triantafyllou ◽  
C. Larsen ◽  
...  
Keyword(s):  
System Design ◽  
Factor Of Safety ◽  
High Mode ◽  
Vortex Induced Vibration ◽  
Medium Scale ◽  
Risk Of Failure ◽  
Increase Risk

Understanding the level of conservatism in a riser system design for vortex-induced vibration (VIV) fatigue is an important issue for operators. This study represents a demonstration of the calibration methodology to derive consistent values for the Factor of Safety (FoS). The exercise is performed here based on medium scale VIV data and utilizing the most commonly used VIV prediction software by industry. The results emphasize the need for (i) a coherent approach to estimate the FoS to be used and (ii) monitoring/measurement of software improvements as this may increase risk of failure if the influence of such improvements on the FoS is not quantified.

High Mode Number Vortex-Induced Vibration Field Experiments

2005 ◽  
Author(s):  
J.K. Vandiver ◽  
H. Marcollo ◽  
S. Swithenbank ◽  
V. Jhingran
Keyword(s):  
Field Experiments ◽  
High Mode ◽  
Mode Number ◽  
Vortex Induced Vibration ◽  
Vibration Field
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