Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
CFD simulations for obtaining steady-state hydrodynamic parameters of a five-degree-of-freedom ROV with jet propulsion
Submission Author:
Arthur Sena Marques , SC
Co-Authors:
Arthur Sena Marques, Hélio Valdevieso Catarin, Lucas Weihmann, Andrea Piga Carboni
Presenter: Arthur Sena Marques
doi://10.26678/ABCM.COBEM2023.COB2023-0940
Abstract
The difficulty of accessing tools and resources required for underwater work remains a challenging task for humans due to physical limitations and safety issues. In this context, unmanned underwater vehicles such as remotely operated vehicles (ROVs) have become essential tools for various purposes. Depending on the service mission, ROVs can be designed for exploration of resources at great ocean depths, maintenance and repair of ship hulls, and marine monitoring and research activities. Obtaining the resistance to advance of complex geometry underwater vehicles through analytical methods can be a difficult and often impossible task. Therefore, a better understanding of drag force can be achieved through the use of computational fluid dynamics (CFD) simulations. In this study, a five-degree-of-freedom ROV designed to act as an underwater platform with jet propulsion was examined, which can be used as a submersible base for manipulator support in the future. The objective of this work was to obtain the steady-state hydrodynamic parameters of the main translation movements of the ROV, including the intermediate direction between the roll and pitch axes of the vehicle. To achieve this objective, drag force was calculated as a function of the ROV velocity and angle of incidence, and the results were presented through two-dimensional and three-dimensional graphs. The study also addressed additional mesh controls due to the geometric complexity of the model, a quality assessment of the mesh generated and used in the final analyses of this work, as well as the evaluated parameters that had the greatest influence on the final results. The conclusions of this study discuss possible future work related to obtaining precise hydrodynamic parameters and an accurate control system for generic transient states. The results of this study demonstrate the effectiveness of using CFD simulations to better understand the hydrodynamic behavior of complex underwater vehicles, which can contribute to the development of more efficient and high-performance designs.
Keywords
ROV, CFD, drag force
