Characteristics of wind power on Savonius rotor using a guide-box tunnel

Irabu, Kunio; Roy, Jitendro Nath

doi:10.1016/j.expthermflusci.2007.06.008

Cited by 127 publications

(57 citation statements)

References 7 publications

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“…The blockage correction factor (f) is largely dependent on the type of wind tunnel test section used (open or closed type), and the blockage ratio (BR = area of turbine model to the area of test section). As found in open literature, the investigations related to blockage correction are mostly carried out in closed type test sections [36][37][38][39]. However, the correlations used for a closed type test section may not be appropriate for an open type test section under dynamic loading conditions.…”

Section: Experimental Validation and Blockage Correctionmentioning

confidence: 99%

Wind tunnel experiments of a newly developed two-bladed Savonius-style wind turbine

2015

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Section: Experimental Validation and Blockage Correctionmentioning

confidence: 99%

Wind tunnel experiments of a newly developed two-bladed Savonius-style wind turbine

2015

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“…Figure 5 presents the variation of the torque coefficient C Md depending on the specific speed λ of the Savonius wind rotor for different external overlaps equal to (e''-e')/d=0, (e''-e')/d=0.1, (e''-e')/d=0.2 and (e''-e')/d=0. 3 According to these results, it has been noted that the gotten curves present a parabolic pace. Therefore, these results show that the external overlap value has an effect on the presentation of the power coefficient values.…”

Section: Introductionmentioning

confidence: 98%

“…The experimental results showed that the performance of Savonius wind rotors could be improved with a suitable curtain arrangement. Irabu and Roy [3] improved and adjusted the output power of Savonius rotor under various wind power and suggests the method of prevention the rotor from strong wind disaster. The experiments include the static torque test of the fixed rotor at any phase angle and the dynamic torque test at rotation of them.…”

Section: Introductionmentioning

confidence: 99%

“…Although it is well suited to be integrated in urban environment as mini or micro wind turbine it is inappropriate when high power is requested. For these reasons, several studies have been carried-out in recent years in order to improve its aerodynamic performance [1][2][3][4][5][6][7][8][9][10][11][12][13]. For example, D'Alessandro et al [1] developed a mathematical model of the interaction between the flow field and the rotor blades.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Savonius Wind Rotor Performance for Different External Overlap Ratios

Driss¹

2015

IJFMTS

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Experimental investigations were carried out to study the external overlap ratios effect on the performance of a vertical axis wind rotor of the Savonius type. For thus, an open wind tunnel has been designed and realized in Laboratory of Electro-Mechanic Systems at National School of Engineers of Sfax. This involved also the instrumentation and the necessary equipment for the global characterization of the Savonius wind rotor. Particularly, this research required the setting up of four mounting characterized by different external overlap ratios. The overall performance evaluation of the rotor has been based on the power and dynamic torque coefficients in function of the air velocity speed measured in the test vein of the wind tunnel.

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“…All rotors were assumed to have a diameter of 30 cm and a thickness of 2 mm considering the manufacturable size of a rotor. Rotor A has three blades with over gap, which is known as one of the models showing the highest performance for open space [18]. Rotor B has three particular-shaped blades and it is a merchandised model called GWE-200BI by Goldwind Energy in South Korea.…”

Section: Design Issue For Rotormentioning

confidence: 99%

A New Building-Integrated Wind Turbine System Utilizing the Building

et al. 2015

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This paper proposes an innovative building-integrated wind turbine (BIWT) system by directly utilizing the building skin, which is an unused and unavailable area in all conventional BIWT systems. The proposed system has been developed by combining a guide vane that is able to effectively collect the incoming wind and increase its speed and a rotor with an appropriate shape for specific conditions. To this end, several important design issues for the guide vane as well as the rotor were thoroughly investigated and accordingly addressed in this paper. A series of computational fluid dynamics (CFD) analyses was performed to determine the optimal configuration of the proposed system. Finally, it is demonstrated from performance evaluation tests that the prototype with the specially designed guide vane and rotor for the proposed BIWT system accelerates the wind speed to a sufficient level and consequently increases the power coefficient significantly. Thus, it was confirmed that the proposed system is a promising environment-friendly energy production system for urban areas.

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Characteristics of wind power on Savonius rotor using a guide-box tunnel

Cited by 127 publications

References 7 publications

Wind tunnel experiments of a newly developed two-bladed Savonius-style wind turbine

Wind tunnel experiments of a newly developed two-bladed Savonius-style wind turbine

Evaluation of the Savonius Wind Rotor Performance for Different External Overlap Ratios

A New Building-Integrated Wind Turbine System Utilizing the Building

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