Design and Analysis of a Diffuser Augment Horizontal Axis Tidal Turbine for Green Power Production

With the gradual reduction of available fossil fuel reserves and environmental impacts, the rate of use of renewable energy in the world has increased. One of the advantages of finite fuels is the constant availability of their use, to achieve sustainability in the supply of energy carriers. Subsequently, to meet the demand in various sectors, it is necessary. Develop technologies to use new energy. One of these renewable energy sources is the offshore energy of the seas and oceans, which has significant potential in the Persian Gulf of Iran. There are many ways to achieve kinetic energy due to the Stream of fluid created by the gravitational pull of the moon on the open waters, such as the use of horizontal axis turbines. Since these types of turbines have the same technology as the horizontal wind turbine built in different parts of Iran, they can be a good option for the construction of a power plant in Iran. In this paper, the effect of current amplifier diffusers on the tidal turbine and its impact on increasing the received power by the numerical method has been investigated. To investigate the numerically the turbine Stream, the confusion model of the two SST equivalents is used in the Ansys CFX fluid dynamics software. The geometry of the diffuser and turbine has been studied separately. And the proposed model includes a turbine with a channel, in which the increase in power is about four times that of the no channels mode.