Analytical Study of the Impact of Solidity, Chord Length, Number of Blades, Aspect Ratio and Airfoil Type on H-Rotor Darrieus Wind Turbine Performance at Low Reynolds Number

Pedram Ghiasi, Gholamhassan Najafi, Barat Ghobadian, Ali Jafari and Mohamed Mazlan
Additional contact information
Pedram Ghiasi: Department of Biosystems Engineering, Tarbiat Modares University, Tehran P.O. Box 111-14115, Iran
Gholamhassan Najafi: Department of Biosystems Engineering, Tarbiat Modares University, Tehran P.O. Box 111-14115, Iran
Barat Ghobadian: Department of Biosystems Engineering, Tarbiat Modares University, Tehran P.O. Box 111-14115, Iran
Ali Jafari: Department of Agricultural Engineering, University of Tehran, Karaj P.O. Box 6619-14155, Iran
Mohamed Mazlan: Advanced Material Cluster, Faculty of Bioengineering and Technology, University Malaysia Kelantan, Jeli, Locked Bag No. 100, Kelantan 17600, Malaysia

Sustainability, 2022, vol. 14, issue 5, 1-14

Abstract: The use of wind energy can be traced back thousands of years to many ancient times. Among the tools used for converting wind energy was the vertical-axis wind turbine (vawt). Investigating the performance of this type of turbine is an interesting topic for researchers. The appropriate correlation between the Double Multiple Stream Tube (DMST) model and the experimental results has led researchers to pay distinct attention to this model for vawt simulation. In this study, using the aforementioned model, the appropriate range of important wind turbine design parameters was determined. First, the model outcome was validated based on experimental results and then, the performances of 144 different turbine types were simulated with respect to chord length, number of blades, H/D ratio and airfoil type. Chord length was evaluated at three levels, 0.1, 0.15 and 0.2 m, number of blades 2, 3 and 4, Height to Diameters (H/D) ratio of 0.5, 1, 1.5 and 2, and four types of airfoils, NACA0012, NACA0018, NACA4412 and NACA4418. Simulation was performed at a low Reynolds number (Re ≤ 10 5 ) and at four TSRs, 1, 2, 3 and 4. The results show that wind turbines perform best at low TSRs when they have longer chords, more blades, and a higher H/D ratio, but this trend reverses at high TSRs. Among the four types of airfoils evaluated, the NACA4412 airfoils showed a better performance at TSRs 1 to 3.

Keywords: DMST model; angle of attack; power coefficient (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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