Numerical and Experimental study of the effect of increasing aspect ratio of self-starting force to vertical axis wind turbine

Seifi, Hossein; Kouravand, Shahriar; Seifi Davari, Mohsen; Mohammadzadeh, Soghra

doi:10.52547/jrenew.10.1.1

Numerical and Experimental study of the effect of increasing aspect ratio of self-starting force to vertical axis wind turbine

Document Type : Original Article

Authors

Hossein Seifi ¹

Shahriar Kouravand ²

Mohsen Seifi Davari ³

Soghra Mohammadzadeh ⁴

¹ Master of Mechanical Engineering, Department Marine of Engineering, Chabahar Maritime University, Chabahar, Iran

² Associate Professor, Mechanical Engineering, College of Abouraihan, University of Tehran, Tehran, Iran

³ Master Civil Engineering Student, Islamic Azad University- Germi Branch, Germi, Iran

⁴ Master Economics Student Economics Department, University of Mohaghegh Ardabili, Ardabil, Iran

https://doi.org/10.52547/jrenew.10.1.1

Abstract

Three airfoils NACA0015, NACA0018 and NACA0021 were selected and in the Q-Blade software, the coefficients of shear, post and the maximum ratio of the exponential coefficients were determined and, finally, the Airfoil Nakata 0015 at a speed of 5 and 10 meters per second, was selected and best. Fluent software was used to solve it, based on the finite volume method. For numerical analysis, the turbulence method K-ω SST was validated with experimental results. The wind turbine schematics was designed in Catia software and the height of the blades was 35 and 75 centimeters, the radius of the blade was 18.5 cm and the length of the airfoil 6.4 Cm is. The results show that in order to operate the turbine of porous blade windings at 35 cm height at speeds of 1, 2, 3, 4, 5, 7, 7.45, 8.25, 8.5 m / s 50% 50%, 33%, 50%, 50%, 60%, 57%, 55%, 50%, and for setting up a porous blade wind turbine at a height of 75 cm at a speed of one, two, three, four, Five, seven, 7.45, 8.25, 8.5, 9, 9.5 m / s 66.6%, 75%, 80%, 71.4%, 66.6%, 76.9%, 80%, 82%, 89%, 100% of the launching force Smooth wind turbine is required at the same height.

Keywords

Aspect Ratio

Self-Starting

Blade

Wind Turbine

Darriues

20.1001.1.24234931.1402.10.1.1.9

[1] R. Firdaus, T. Kiwata, T. kano and K. Nagao, Numerical and experimental studies of a small vertical axis wind turbine with variable – pitch straight blades, Journal of Fluid Science and Technology, Vol.10, No.1, pp.220-228, 2015.

[2] M. Bahrami and P. Abbaszadeh, An overview of renewable energies in Iran. Renewable and Sustainable Energy Reviews, Vol. 24, pp.198–208, 2013.

[3] D. Nagarkar and D. Khan, Characteristics of ice accretions on blade of the straight-bladed vertical axis wind turbine rotating at low tip speed ratio, Cold Regions Science and Technology, Vol. 145, pp. 1-13, 2018.

[4] A. Sengupta, A. Biswas and R. Gupta, R, Determination of vertical axis wind turbines optimal configuration through CFD simulations, International Conference on Future Environment and Energy, Vol. 28, pp. 13 -19, 2012.

[5] K. Gharali and D. Johnson, Numerical modeling of an S809 airfoil under dynamic stall, erosion and high reduced frequencies, Applied Energy, Vol. 93, pp. 45 -52, 2012.

[6] Y. Lee and H. Lim, Numerical study of the aerodynamic performance of a 500 W Darrieus-type vertical-axis wind turbine, Renewable Energy, Vol. 83, pp.407 - 415, 2015.

[7] M. Douak, Z. Aouachira, R. Rabehi and N. Allam, Wind energy systems: Analysis of the self-starting physics of vertical axis wind turbine, Renewable and Sustainable Energy Reviews, Vol. 81, No. 1, pp. 1602-1610, 2018.

[8] P. Fuglsang and K. Thomsen, Cost Optimization of Wind Turbines for Large Scale Offshore Wind Farms, Risoe National Lab., Roskilde (Denmark). Wind Energy and Atmospheric Physics Dept, 1998.

[9] T. Benini and A. Toffolo, Optimal design of horizontal-axis wind turbines using blade element theory and evolutionary computation, Journal of Solar Energy Engineering, Vol. 124, No. 4, pp. 357–363, 2002.

[10] Y. Hu and S. Rao, Robust design of horizontal axis wind turbines using taguchi method, Journal of Mechanical Design, Vol.133, No. 11, pp:1-15, 2011.

[11] E. Sobhani, M. Ghaffari and M. Maghrebi, Numerical investigation of dimple effects on darriues vertical axis wind turbine, Energy, Vol. 133, pp. 231-241, 2017.

[12] J. Vince, Mathematics for Computer Graphics. 3rd Edition, Springer, pp: 17-37, 2017.

[13] R. M. Pinkerton, The Variation with Reynolds Number of Pressure Distribution over an Airfoil Section, Technical Report No. 613, NASA, Cranfield, UK, 1938.

[14] L.A. Danao, B. Abuan, R. Howel, Design analysis of a horizontal axis tidal turbine, Asian Wave and Tidal Conference, 2016.