Exploring Autonomous and Remotely Operated Vehicles in Offshore Structure Inspections

Fun Sang Cepeda, Maricruz; Freitas Machado, Marcos de Souza; Sousa Barbosa, Fabrício Hudson; Santana Souza Moreira, Douglas; Legaz Almansa, Maria José; Lourenço de Souza, Marcelo Igor; Caprace, Jean-David

doi:10.3390/jmse11112172

Cited by 9 publications

(1 citation statement)

References 111 publications

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“…The AUV adopts the main body outline of the SUBOFF [19] standard submarine shape, initially released by DARPA in 1989. Simulation conditions are established by referencing the HUGIN Endurance's technical specifications, a Kongsberg Maritime product [20]. Table 1 shows comprehensive technical dimensions and parameters for the AUV and the mission payload.…”

Section: Separation Model and Parametersmentioning

confidence: 99%

Safety Analysis of Initial Separation Phase for AUV Deployment of Mission Payloads

Wang,

Gu,

Lang

et al. 2024

JMSE

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This study verifies the effects of deployment parameters on the safe separation of Autonomous Underwater Vehicles (AUVs) and mission payloads. The initial separation phase is meticulously modeled based on computational fluid dynamics (CFD) simulations employing the cubic constitutive Shear Stress Transport (SST) k-ω turbulence model and overset grid technologies. This phase is characterized by a 6-degree-of-freedom (6-DOF) framework incorporating Dynamic Fluid-Body Interaction (DFBI), supported by empirical validation. The SST k-ω turbulence model demonstrates superior performance in managing flows characterized by adverse pressure gradients and separation. DFBI entails computationally modeling fluid–solid interactions during motion or deformation. The utilization of overset grids presents several advantages, including enhanced computational efficiency by concentrating computational resources solely on regions of interest, simplified handling of intricate geometries and moving bodies, and adaptability in adjusting grids to accommodate changing simulation conditions. This research analyzes mission payloads’ trajectories and attitude adjustments after release from AUVs under various cruising speeds and initial release dynamics, such as descent and angular velocities. Additionally, this study evaluates the effects of varying ocean currents at different depths on separation safety. Results indicate that the interaction between AUVs and mission payloads during separation increases under higher navigational speeds, reducing the separation speed and degrading the stability. As the initial drop velocities increase, fast transition through the AUV’s immediate flow field promotes separation. The core of this process is the initial pitch angle management upon deployment. Optimizing initial pitching angular velocity prolongs the time for mission payloads to reach their maximum pitch angle, thus decreasing horizontal displacement and improving separation safety. Deploying AUVs at greater depths alleviates the influence of ocean currents, thereby reducing disturbances during payload separation.

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Section: Separation Model and Parametersmentioning

confidence: 99%

Safety Analysis of Initial Separation Phase for AUV Deployment of Mission Payloads

Wang,

Gu,

Lang

et al. 2024

JMSE

View full text Add to dashboard Cite

show abstract

Efficient and reliable corrosion control for subsea assets: challenges in the design and testing of corrosion probes in aggressive marine environments

Odeyemi,

Alaba

2024

Corrosion Reviews

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This review discusses the challenges in designing and testing corrosion probes for aggressive marine environments. The objectives are to analyze existing literature, identify methodological problems, and highlight research gaps in subsea corrosion control. To achieve these, a comprehensive review of relevant literature was conducted, focusing on factors like high salinity, fluctuating temperatures, and the presence of corrosive agents. The methods involved synthesizing information from peer-reviewed articles, industry reports, and academic publications to thoroughly analyze current state of knowledge. The findings of this review highlight the need for standardized testing protocols, improved understanding of material compatibility, and consideration of real-world conditions in corrosion probe design and testing. Methodological problems include the lack of standardized testing protocols, limited understanding of material compatibility, and insufficient consideration of real-world conditions. These findings emphasize the challenges researchers and practitioners face in developing efficient and reliable corrosion control strategies for subsea assets. In terms of novelty and improvement, this manuscript contributes to improving corrosion control practices in aggressive marine environments by synthesizing existing literature, identifying methodological problems, and highlighting gaps. By addressing these challenges, future research can focus on developing innovative solutions and methodologies to enhance the durability and effectiveness of corrosion probes in subsea environments.

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Revolutionizing ocean engineering: the impact of autonomous vehicles

Pessanha Santos

2024

Academia Engineering

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Exploring Autonomous and Remotely Operated Vehicles in Offshore Structure Inspections

Cited by 9 publications

References 111 publications

Safety Analysis of Initial Separation Phase for AUV Deployment of Mission Payloads

Safety Analysis of Initial Separation Phase for AUV Deployment of Mission Payloads

Efficient and reliable corrosion control for subsea assets: challenges in the design and testing of corrosion probes in aggressive marine environments

Revolutionizing ocean engineering: the impact of autonomous vehicles

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