Volume 22, Issue 9 (September 2022)
Modares Mechanical Engineering 2022, 22(9): 603-613 |
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Sadripour G, Shafaghat R, Alizadeh Kharkeshi B, Sadeqi S. Experimental Study on The Effect of Water Depth and Incident Wave Frequency on The Performance of a OWSC Imposed to Caspian Sea Wave Conditions. Modares Mechanical Engineering 2022; 22 (9) :603-613
URL: http://mme.modares.ac.ir/article-15-61011-en.html
URL: http://mme.modares.ac.ir/article-15-61011-en.html
1- MSc. Student, Sea-Based Energy Research Group, Babol Noshirvani University of Technology, Babol, Iran
2- Professor, Sea-Based Energy Research Group, Babol Noshirvani University of Technology, Babol, Iran ,rshafaghat@nit.ac.ir
3- Ph.D Student in Mechanical Engineering, Sea-Based Energy Research Group, Babol Noshirvani University of Technology, Babol, Iran
4- BSc of Mechanical Engineering, Sea-Based Energy Research Group, Babol Noshirvani University of Technology, Babol, Iran
2- Professor, Sea-Based Energy Research Group, Babol Noshirvani University of Technology, Babol, Iran ,
3- Ph.D Student in Mechanical Engineering, Sea-Based Energy Research Group, Babol Noshirvani University of Technology, Babol, Iran
4- BSc of Mechanical Engineering, Sea-Based Energy Research Group, Babol Noshirvani University of Technology, Babol, Iran
Abstract: (1707 Views)
Flap-type WECs are used On-Shore to generate electricity and pump. The draft depth and incident wave frequency are parameters affecting the performance of this type of converters. In this paper, the effect of water draft depth and incident wave frequency on the performance of a converter at a scale of 1: 8 investigated experimentally. The power take-off system is hydraulic. The Caspian Sea was also selected as the target sea. After calibration and uncertainty analysis, experimental tests performed in the wave-flume of BNUT by regular waves. Considering the period of the Caspian Sea ([4-8] s), Froud scaling, the tests were performed in the period interval of [1.6-2.5] s, which is equivalent to the frequency interval [0.4-0.63 ] Hz. Also, due to the importance of the converter's draft, the converter's performance was evaluated from the draft of -0.1 (submerged flap) to 0.6 m. According to the results, the best converter performance was at the lowest frequency; the converter performance decreased with increasing frequency. The best converter performance was obtained at the dimensionless draft of 0.43 (equivalent to 0.4 m draft), and the converter power was reduced at larger and smaller draft. It is worth noting that at a negative draft (submerged flap), the converter has the lowest performance. The maximum values of flow, power and pressure on a laboratory scale were 0.14 liters per second, 21.3 watts and 156.8 kPa, respectively, which were measured at 18 liters per second, 22.66 kW, respectively, using Froud scaling method. And will be 1249/61 kPa
Article Type: Original Research |
Subject:
Experimental Fluid Mechanics
Received: 2022/04/19 | Accepted: 2022/05/26 | Published: 2022/09/1
Received: 2022/04/19 | Accepted: 2022/05/26 | Published: 2022/09/1
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