Work

A Numerical Investigation of Power Extraction using Biomimetic Hydrofoils for a Full Passive Oscillating Hydrokinetic Turbine

Year: 2024

Type: conference-paper

Abstract: A new concept of hydrokinetic turbines based on oscillating hydrofoils using the biomimetic foils Dragonfly Canard and NREL-S814 comparing its power performance to that of a standard NACA 0015 foil is conducted in this study through the use of 2D simulations using URANS with Spalart-Allmaras as a turbulence model.The fluid conditions used in the study include 𝑈 ∞ =2 m/s, ρ=997 kg/m^3, Re = 500,000, a chord length of 0.25 m, ⏀=90°, and θo=75° across all foils.The dimensionless frequency is f*=0.14, f*=0.20, and f*=0.12 were used across 3 cases.The heaving amplitudes used for Case 1&2 is Ho = c, while Case 3 is Ho=2c.The study gives insight into the advantages and disadvantages of using biomimetic foils.A symmetrical foil is observed to provide the best-performing foils in CP and η results.Additionally, increasing the foil's frequency and heaving amplitude decreases flow detachment, improving the overall performance.

Source: Proceedings of International Exchange and Innovation Conference on Engineering & Sciences (IEICES)

DOI: 10.5109/7323348

Authors: Ramon III Gregorio, Cylvia Mae Gonzaga, Jonathan Maglasang

Institutions: Ateneo de Davao University, Cebu Technological University

Language: English

Topic: Biomimetic flight and propulsion mechanisms

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

OpenAlex ID: W4404653518