Blue Marlin Fish Caudal Fin Inspired Blade Design For Horizontal Axis Tidal Turbines

Siddharth Kulkarni (Inventor), Craig Chapman (Inventor), Hanifa Shah (Inventor)

    Research output: Patent


    Our Invention Blue Marlin fish caudal fin inspired blade design for horizontal axis tidal turbines is a Tidal current power generation offers a prospect of renewable energy which is predictable, and has lower CO2 emissions than traditional energy generation sources. It also has the potential to fulfil a significant part of the energy requirements of the world. In this present invention a method to design a novel horizontal axis tidal turbine (HATT) blade shape through bio-mimicking a curved caudal fin shape to produce improved power coefficient is presented. At first, a parametric HATT is modelled according to the literature, where a centreline is then inserted which also acts as the master and a novel third order polynomial function was integrated on the centreline to model the Blue Marlin fish caudal fin look-alike target shape HATT. Secondly, a design strategy to move the curved blade backwards to the straight blade was also developed. Thirdly a Computational Fluid Dynamics (CFD) analysis is conducted to test the overall power efficiency of the caudal fin shaped blade with the standard HATT models in the literature. Finally, after comparing the improved efficiency of the bio-mimicked curved blade with the standard HATT models in the literature, it can be proved that bio-mimicking the caudal fin look-alike blade produces a higher power coefficient than the standard HATT blade.
    Original languageEnglish
    Patent number202119010184
    Filing date11/03/21
    Publication statusPublished - 2 Apr 2021

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