The results of in-water vortex-induced vibration (VIV) experiments on circular cylinders artificially covered with barnacles are reported. The paper focusses on the effects of the partial coverage and the shape of the fouling elements. An artificial barnacle typical of marine fouling was synthesised using 3-D printing. Coverage ratios of 80, 50 and 30% were examined and the results compared with those from a smooth cylinder. The Reynolds number ranged from 5.8 × 10 to 6.6 × 10. The experimental results show that the fouling reduced the peak VIV amplitude, narrowed the synchronisation region and lowered the hydrodynamic force coefficients such as the coefficients of lift force RMS, the mean drag force and the fluctuating drag force RMS. The shape of the artificial barnacles had little effect on the maximum oscillation amplitude. The coverage ratio appeared to have a lower impact on the lift force than those on the amplitude and the frequency responses.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/08927014.2017.1291803 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A novel separated OPECT aptasensor based on MOF-derived BiVO/BiS type-II heterojunction for rapid detection of bacterial quorum sensing signal molecules.
Talanta
January 2025
Qingdao Key Laboratory of Analytical Technology Development and Offshore Eco-Environment Conservation, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, No. 6 Xianxialing Road, Qingdao, 266061, PR China. Electronic address:
Quorum sensing signal molecules released by microorganisms serve as critical biomarkers regulating the attachment and aggregation of marine microbes on engineered surfaces. Hence, the development of efficient and convenient methods for detecting quorum sensing signal molecules is crucial for monitoring and controlling the formation and development of marine biofouling. Advanced optoelectronic technologies offer increased opportunities and methods for detecting quorum sensing signal molecules, thereby enhancing the accuracy and efficiency of detection.
View Article and Find Full Text PDFBiofouling dynamics and antifouling innovations: Transitioning from traditional biocides to nanotechnological interventions.
Environ Res
January 2025
Marine Elements and Marine Environment Division, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar-364 002 (Gujarat), India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. Electronic address:
Biofouling is a common phenomenon caused by waterborne organisms such as bacteria, diatoms, mussels, barnacles, algae, etc., accumulating on the surfaces of engineering structures submerged under water. This leads to corrosion of such surfaces and decreases their moving efficiency.
View Article and Find Full Text PDFSemantic segmentation using synthetic images of underwater marine-growth.
Front Robot AI
January 2025
AAU Energy, Aalborg University, Esbjerg, Denmark.
Introduction: Subsea applications recently received increasing attention due to the global expansion of offshore energy, seabed infrastructure, and maritime activities; complex inspection, maintenance, and repair tasks in this domain are regularly solved with pilot-controlled, tethered remote-operated vehicles to reduce the use of human divers. However, collecting and precisely labeling submerged data is challenging due to uncontrollable and harsh environmental factors. As an alternative, synthetic environments offer cost-effective, controlled alternatives to real-world operations, with access to detailed ground-truth data.
View Article and Find Full Text PDFPhotoinitiated Thiol-Ene Click Reaction for Preparation of Highly Adhesive and Mechanically Stable Silicone Coatings for Marine Antifouling and Anticorrosion.
ACS Appl Mater Interfaces
January 2025
Tianjin Key Laboratory for Marine Environmental Research and Service, School of Marine Science and Technology, Tianjin University, Tianjin 300072, China.
Marine biofouling and corrosion have become the main problems affecting the development of the marine industry. Silicone-based coatings have been widely used for antifouling and anticorrosion due to their low surface energy. However, the poor adhesion and low mechanical stability of these materials limit their application in complex marine environments.
View Article and Find Full Text PDFNanozyme-based dual-mode DNA biosensor for self-powered ultrasensitive detection of sulfate-reducing bacteria.
Biosens Bioelectron
January 2025
Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China. Electronic address:
Sulfate-reducing bacteria (SRB) are recognized as significant contributors to microbiologically induced corrosion (MIC). Developing effective, economical, sensitive, and specific detection methods for SRB is crucial for understanding microbial corrosion mechanisms and for early monitoring. In this study, a novel dual-mode DNA biosensor was developed, utilizing a nanozyme-based fuel cell to enable self-powered detection of the DsrA gene in SRB, while demonstrating excellent sensitivity, specificity, and reliability.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!