Active and passive control of a galloping cylinder with heat transfer
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Active and passive control of a galloping cylinder with heat transfer Mohammad Yaghoub Abdollahzadeh Jamalabadi1,2 Received: 18 June 2020 / Accepted: 26 October 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract Wind energy caused the transverse vibration of the beam, and the mechanical energy of vibration is transferred to electrical charge by piezoelectric transducer. In the current study, the active and passive control of energy release from a galloping bluff body is found. The system consists of a bluff body in front of wind which is mounted on a cantilever beam and supported by piezoelectric sheets. The nonlinear motion of the Euler–Bernoulli beam and conservation of electrical energy is modeled by lumped ordinary differential equations. The wind force on bluff body is modeled by moving mesh techniques in OpenFoam software where the fluid and solid corresponding dynamics are connected in timescales. The position of piezoelectric actuator and the location of bump are the two parameters considered for optimization analysis of galloping device. Genetic algorithms are used to find the optimal arrangements. Numerous models are offered for a clamped−clamped supported beam. Keywords Piezoelectric · Control · Modeling · Smart material · Fluid–structure interaction List of symbols D Width of the cylinder section f Frequency of vortex shedding or natural frequency of cylinder motion (Hz) U Wind velocity (m s−1) m Mass (kg) Re Reynolds number x Longitudinal coordinate z(t) Vertical displacement of the cylinder (m) ρ Air density (kg m−3) ω Angular frequency
Introduction The fluid flow caused by galloping oscillations of prismatic structures is a classic problem in fluid–structure field [1]. The fluid sloshing coupled by structure motion with an improvement of port-Hamiltonian model [2], positive position feedback control of an acoustics galloping structure [3], * Mohammad Yaghoub Abdollahzadeh Jamalabadi [email protected] 1
Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
2
the frequency response of a cavitating hydrofoil [4]. As well the harness of water sloshing in a rectangular tank horizontally coupled by structure with circular baffles is optimized [5]. Vortex-induced vibration problem is also studied in fluid flow-induced nonlinear vibration of suspended cables [6]. This motion is studied in flow-induced vibrations which has many applications in noise and vibration engineering [7]. Even though the application of a fluid flow-induced nonlinear vibration of suspended cables is a classic case [6], but the study of its application in energy harvesting is newly paid attention and is not discussed comprehensively [8–10] in researches. Modeling and analysis of an act of cambered wing for the first time are performed by Abdelkefi and Nuhait [8]. Barrero-Gil et al. [9] performed the parameter study on the energy harvesting from t
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