期刊
JOURNAL OF FLUIDS AND STRUCTURES
卷 114, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jfluidstructs.2022.103751
关键词
Flexible oscillating foil; Flutter; Fluid-structure interaction; Wind turbine
资金
- Ministerio de Ciencia e Innovacion of Spain [PID2019-104938RB-I00]
- Universidad de Malaga/CBUA
We investigate the energy extraction capability of flexible foils mounted to translational springs and dampers at the leading edge, finding that energy can be harvested from low-speed winds. The study provides theoretical predictions and numerical simulations to demonstrate the potential of these foils in extracting energy at lower wind speeds compared to conventional wind turbines.
We explore numerically and theoretically the capability of flexible foils elastically mounted to translational springs and dampers at the leading edge to extract energy from low-speed winds through its passive heave motion. Given the spring and foil stiffnesses, for each damper constant the theory (which is valid for high Reynolds numbers and small foil deflection amplitudes, i.e., in absence of separation) provides analytically a minimum wind velocity for flutter instability, above which energy can be harvested, that depends on the thickness-to-chord-length ratio of the foil. Simple analytical expressions for the flutter frequency are also provided. Minimum wind speeds and corresponding flutter frequencies are characterized for a carbon fiber foil as the spring stiffness and damper constant are varied, finding that energy can be extracted from wind speeds lower than in conventional wind turbines. These theoretical predictions are assessed from full numerical simulations at Reynolds numbers corresponding to these wind velocities and for chord lengths of the order of the meter (i.e. about 106) using appropriate turbulence models, which allow to compute the power extracted from the wind that the flutter stability analysis cannot provide. (c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据