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1- School of Civil Engineering, College of Engineering, University of Tehran
2- Department of Mechanical Engineering, Sharif University of Technology
3- Department of Civil Engineering, Sharif University of Technology
4- Department of Civil Engineering, K.N.Toosi University of Technology
Abstract:   (247 Views)
The horizontal kinetic energy of the fluid flow, from on-land wind to ocean tidal stream, is one of the most promising sources of the energy. In the field of renewable energies, power extraction from Flow Induced Vibration (FIV) of bluff bodies is a fast growing research area which has seen a great advancement over the last decade. In this study, the FIV energy harvesting potential of a sharp edge square cylinder in two different flow incidences is investigated. The square cylinder, depending on its orientation with respect to the incident flow, demonstrates VIV or galloping types of responses. The results indicate that the square cylinder with a flat side perpendicular to the flow has a galloping type of response. In contrast, the same cylinder with a sharp vertex pointing the flow (diamond configuration) shows a VIV type of response. The hydroelastic efficiency of the resonating square cylinder is significantly higher than that with the galloping type of response. This shows the great advantages of diamond VIV excavators over square galloping harvesters.
Full-Text [PDF 676 kb]   (35 Downloads)    
Type of Study: Research Paper | Subject: Offshore Structure
Received: 2019/01/13 | Accepted: 2019/06/15

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