Design of Wave Glider Optimal Parameters Suitable for the Northwest Pacific Ocean, the North Indian Ocean, and the South China Sea

Abstract

To study the optimal design of Wave Glider parameters in the wave environment of the Northwest Pacific Ocean, the North Indian Ocean, and the South China Sea, the average velocity of a Wave Glider was taken as the evaluation criterion. Wave reanalysis data from ERA5 were used to classify the mean wave height and period into five types by the K-means clustering method. In addition, a dynamic model was used to simulate the influence of umbilical length, airfoil, and maximum limited angle on the velocity of the Wave Glider under the five types of wave element. The force of the wings was simulated using FLUENT as the model input. The simulation results show that (1) 7 m is the most suitable umbilical length; (2) a smaller relative thickness should be selected in perfect conditions; and (3) for the first type of wave element, 15° is the best choice for the maximum limited angle, and 20° is preferred for the second, third, and fourth types, while 25° is preferred for the fifth type.

Resistance Evaluation for the Submerged Glider System using CFD Modelling

“…The simple geometrical mathematically defined cambered plate presented an appropriate selection for the rudder of the submerged system to configure the realistic suggested model as demonstrated in Figures 5 [9,10]. As previous work for the submerged part of wave glider for rudder design, Figure 6 shows the flow field of compared plate at Rn 4x10 4 and 20 o AoA.…”

“…One of the challenging design and hydrodynamic analysis of airfoils is at low Reynolds numbers. The simple geometrical mathematically defined NACA 0012 foil presented an appropriate selection for the fins of the submerged system to configure the realistic suggested model as demonstrated in figure 9 [9,10]. The NACA 0012, a well-researched airfoil from the 4-digit series of NACA airfoils, was employed in this study.…”

A Novel and More Efficient Oscillating Foil for Wave-Driven Unmanned Surface Vehicles

“…The wave-driven unmanned surface vehicle (WUSV) has been widely concerned by researchers ( Hine et al, 2009 ; Manley and Willcox, 2010 ; Tian et al, 2014 ; Johnston and Poole, 2017 ; Wang et al, 2020 ; Chen et al, 2021 ; Li et al, 2021 ; Liu et al, 2021 ; Lyu et al, 2021 ; Yiming et al, 2021 ), due to wave energy stability. WUSV is an unmanned vehicle that sails on the sea surface by merely utilizing wave energy as its driving power ( Liu et al, 2018 ).…”