Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Multi-Point Shape Optimization of a Horizontal Axis Tidal Stream Turbine

Version 1 : Received: 9 July 2021 / Approved: 12 July 2021 / Online: 12 July 2021 (12:26:14 CEST)

How to cite: El Sheshtawy, H.; el Moctar, O.; Natarajan, S. Multi-Point Shape Optimization of a Horizontal Axis Tidal Stream Turbine. Preprints 2021, 2021070260 (doi: 10.20944/preprints202107.0260.v1). El Sheshtawy, H.; el Moctar, O.; Natarajan, S. Multi-Point Shape Optimization of a Horizontal Axis Tidal Stream Turbine. Preprints 2021, 2021070260 (doi: 10.20944/preprints202107.0260.v1).

Abstract

A method was developed to perform shape optimization of a tidal stream turbine hydrofoil using a multi-objective genetic algorithm. A bezier curve parameterized the refrence hydrofoil profoil NACA 63815. Shape optimization of this hydrofoil maximized its lift-to-darg ratio and minimized its pressure coefficient, thereby increasing the turbines power output power and improving its cavitation characteristics. The Elitist Non-dominated Sorting Genetic Algorithm (NSGA-II) was employed to perform the shape optimization. A comparative study of two-and three-dimensional optimizations was carried out. The effect of varing the angle of attack on the quality of optimized results was also studied. predictions based on two-dimensional panel method results was also studied. Preditions based on a two-dimensional panel method and on a computational fluid dynamics code were compared to experimental measurments.

Subject Areas

Hydrofoil optimization; NSGA-II; CFD; XFOIL; NACA 63815; Bezier curve

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.