Piezoelectric energy harvesting from vortex-induced vibrations of circular cylinder

A Mehmood, A Abdelkefi, MR Hajj, AH Nayfeh… - Journal of Sound and …, 2013 - Elsevier
The concept of harvesting energy from a circular cylinder undergoing vortex-induced
vibrations is investigated. The energy is harvested by attaching a piezoelectric transducer to …

A state-of-art review on Bladeless Wind Turbine

R Tandel, S Shah, S Tripathi - Journal of Physics: Conference …, 2021 - iopscience.iop.org
As a result of continuous depletion of non-renewable energy sources, new methods of
harvesting energy are being developed. A unique way of harvesting wind energy, namely …

Phenomena and modeling of piezoelectric energy harvesting from freely oscillating cylinders

A Abdelkefi, MR Hajj, AH Nayfeh - Nonlinear Dynamics, 2012 - Springer
We investigate energy harvesting from vortex-induced vibrations of a freely moving rigid
circular cylinder with a piezoelectric transducer attached to its transverse degree of freedom …

Two-level discretizations of nonlinear closure models for proper orthogonal decomposition

Z Wang, I Akhtar, J Borggaard, T Iliescu - Journal of Computational Physics, 2011 - Elsevier
Proper orthogonal decomposition has been successfully used in the reduced-order
modeling of complex systems. Its original promise of computationally efficient, yet accurate …

Effects of a non-linear energy sink (NES) on vortex-induced vibrations of a circular cylinder

A Mehmood, AH Nayfeh, MR Hajj - Nonlinear dynamics, 2014 - Springer
We investigate in detail the passive control of vortex-induced vibrations of a freely oscillating
circular cylinder using a non-linear energy sink consisting of a secondary system having …

Hydrodynamics of a flexible cylinder under modulated vortex-induced vibrations

C Liu, S Fu, M Zhang, H Ren, Y Xu - Journal of Fluids and Structures, 2020 - Elsevier
Both amplitude modulation and frequency modulation of Vortex-induced Vibration (VIV) are
observed in a recent model test of a flexible cylinder under oscillatory flow, but its …

Linear and nonlinear active feedback controls for vortex-induced vibrations of circular cylinders

A Mehmood, A Abdelkefi, I Akhtar… - Journal of Vibration …, 2014 - journals.sagepub.com
We consider the problem of suppressing oscillations of an elastically mounted rigid cylinder
undergoing vortex-induced vibrations by linear and nonlinear active velocity feedback …

[HTML][HTML] Reduced order model of offshore wind turbine wake by proper orthogonal decomposition

MS Siddiqui, STM Latif, M Saeed, M Rahman… - International Journal of …, 2020 - Elsevier
A wide range of previously designed methods for faster parametrization of partial differential
equations requires them to be solved using existing finite volume, finite element, and finite …

Complex mixed-mode vibration types triggered by the pitchfork bifurcation delay in a driven van der Pol-Duffing oscillator

X Ma, Y Yu, L Wang - Applied Mathematics and Computation, 2021 - Elsevier
The intent of this work is to explore the generation mechanism of four mixed-mode vibration
types triggered by the pitchfork bifurcation delay phenomenon in a driven van der Pol …

Using functional gains for effective sensor location in flow control: a reduced-order modelling approach

I Akhtar, J Borggaard, JA Burns, H Imtiaz… - Journal of Fluid …, 2015 - cambridge.org
The problem of active feedback control of fluid flows falls into a class of problems in the area
of distributed parameter control. Distributed parameter systems are typically defined by …