Affiliation:
1. Department of Mechanical System Engineering Jeju National University Jeju Jeju‐si South Korea
2. Department of Fundamental of Machine Design Ho Chi Minh City University of Technology and Education Ho Chi Minh City Viet Nam
Abstract
AbstractIn this study, a parametric analysis was conducted for the design of a suggested dual flapping hydrofoil turbine. A Navier–Stokes‐based computational fluid dynamics code was utilized for the analysis while varying the pitch angle, reduced frequency, separation distance, and phase difference. The smallest pitch angle of 60° and the reduced frequency of 0.1 among the given ranges of the parameters were fixed for the first parametric analysis. After an assessment, the 90° front‐lead with the longest distance of 6c and the 90° rear‐lead with the shortest distance of 2c were chosen for further parametric analysis based on a suggested performance indicator and a margin for improvement. It was derived from a subsequent parametric analysis that a 70° pitch angle, 0.12 reduced frequency, and a 4c distance for the 90° front‐lead was the final optimum with 59.48% efficiency and 55.44% fluctuation according to the performance indicator as well as the system length and power balance of dual hydrofoils.
Funder
National Research Foundation of Korea
Subject
General Energy,Safety, Risk, Reliability and Quality