A Review of Technology Development and Numerical Model Equation for Ocean Current Energy

Abstract

Scope for of research publications on ocean current energy has increased, resulting in high innovation from ocean energy technology and available models for numerical equations in article publications. Reviews for mapping studies on the development of technology and numerical equations are still rarely carried out. This review refers to articles that use equipment used at sea and are based only on ocean currents for research. From a variety of results of the investigation, it can be expected to be used as material for further studies to find research materials that can be discussed collectively or need to be handled further. The objective of present review study is scanning condition of technology used for analysis and find out the types of numerical equations that are often used in papers in recent years. The result is that various areas of innovation have been investigated in current energy conversion technologies that increase performance and durability and reduce the impact on the environment and have summarised alternative numerical analysis commonly used for current energy conversion technologies.

Experimental Study on the Effect of Foil Guide Vane on the Performance of a Straight-Blade Vertical Axis Ocean Current Turbine

“…Vertical turbines can rotate from all directions when the ocean currents come so that the amount of energy extracted will be more and more stable. At the same time, horizontal turbines cannot rotate from all directions when the ocean currents come, so the energy extracted is less [8][9][10][11]. Based on the actual conditions at sea, it is true that ocean currents move from various directions.…”

“…Analysis by modifying blades has been carried out for the fi rst time by Gorlov [13], and the results show that it can increase the maximum power coeffi cient up to 0.35 by changing the shape of a straight blade into a helical blade. Kirke and Lazauskas [8] carried out the research by modifying the rotor, and the results have shown to increase the maximum power coeffi cient up to 0.32 by changing the fi xed variable to passive. The foil, blade, and rotor are the most vital components of the turbine, so if modifi ed, it will aff ect the geometric shape, and its performance may increase or decrease.…”