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Review Papers | Civil Engineering | China | Volume 12 Issue 12, December 2023
CFD Simulation of the Galloping and Piezoelectric Energy Harvesting of a Cylindrical Body Equipped with V - Shaped Flow Control Devices
Mohamed Abdirahman Hassan
Abstract: The technique to extract low velocity hydrokinetic energy through the use of a galloping piezoelectric energy harvester (GPEH) has been advanced. However, Piezoelectric energy harvesters are a novel class of power generation apparatus that can transform flow - induced vibrational energy into electrical energy. This kind of energy can be used to generate low - velocity water flow energy and different forms of wind energy in rivers and seas. This paper seeks to discuss CFD simulation of the galloping and piezoelectric energy harvesting of a cylindrical body equipped with V - shaped flow control devices. The study used an analysis of the flow patterns around a cylindrical body with V - SHAPED flow control devices attached at various circumferential points. ANYSYS FLUENT 2021 - R2, focusing on two staggered arrangements (X3Y0 and X1Y0) was used in the analysis. This was used to get insights into the flow aspects that determine how energy harvesting systems perform. There were notable fluid interactions in the X3 Y0 configuration, which was defined by a closer spacing between the two cylinders. The increased vibration amplitudes in this configuration suggest a strong interaction between the cylinders, separated shear layers, and vortex shedding. The special configuration at particular times, like t = T/4 and t = 3T/4, produced significant upward and downward forces, demonstrating the complex fluid - structure coupling. This configuration, characterized by strong fluid interactions, has the potential to maximize energy harvesting, but it needs to be carefully considered because of its structural and practical ramifications.
Keywords: hydrokinetic energy, piezoelectric energy harvester, CFD simulation, fluid - structure interaction, energy harvesting systems
Edition: Volume 12 Issue 12, December 2023,
Pages: 1992 - 1995