Tidal energy is one of the major sources renewable energy. To accelerate development tidal energy, improved designs Current Turbine (TCT) are necessary. The effect tower on performance and wake TCT investigated using Computational Fluid Dynamics (CFD) simulations. Transient analysis with transient rotor stator frame change model shear stress transport turbulence utilized in ANSYS CFX. An experi...

A numerical analysis is carried out to determine the flowfield and starting characteristics of a straight cylindrical supersonic exhaust diffuser of a high-altitude simulation of a high expansion ratio rocket nozzle. The flow field inside the high-altitude facility is analyzed for a conical nozzle of expansion ratio of 25, diffuser inlet-to-nozzle throat area ratio of 28.9, and diffuser length-...

Analysis of the emission pattern from optical diffuser tips is vital to their usage in biomedical applications, especially as they find growing functionality beyond established phototherapy techniques. The use of ultraviolet radiation with diffuser tips increases the need to accurately characterize these devices, both for effective application and to avoid potentially dangerous exposure conditi...

Tidal energy is a reliable, consistent and abundant source of renewable energy. However, there are many concerns with different tidal devices relating to their environmental impacts over the lifetime. It essential address these issues by assessing technologies throughout all phases life cycle. In this context, cradle grave cycle assessment (LCA) study performed hereby on 1 MW Deepgen turbine. R...

Tidal energy generators have the potential to injure or kill marine animals, including small cetaceans, through collisions with moving turbine parts. Information on fine scale behaviour of animals close operational turbines is required inform regulators likely impact these new technologies. Harbour porpoise movements were monitored in three dimensions around a tidal for 451 days between October...

Tidal stream turbines (TST) are subject to large unsteady hydrodynamic loads which will result in fatigue of components and potentially failure. Control algorithms, if used effectively, have the ability reduce these without affecting overall performance. To examine effect control strategy on performance loads, experimental tests were carried out using a 1:15 scale TST combined wave–current faci...