Performance evaluation of profile modifications on straight-bladed vertical axis wind turbine by energy and Spalart Allmaras models

Vivek Shukla and Ajay Kumar Kaviti

Energy, 2017, vol. 126, issue C, 766-795

Abstract: In this paper, we investigated the effect of profile modifications on straight bladed VAWTs equipped with symmetrical aerofoil (NACA 4-digit series of NACA 0012, NACA 0015, NACA 0018, and NACA 0021). Aerofoil profile modifications being investigated, consists of only Gurney flap, only inward dimple and combination of both Gurney flap and dimple. In this work, we focused on the values of lift, aerofoil velocity and aerofoil forces as these are the vital parameters, which are used as the parameters to measure for power generated by the turbine by Energy and the Spalart Allmaras models. All the design modifications and simulation analysis have been done with the help of CFD by using ANSYS Fluent. The results of the modified profiles are compared in terms of lift coefficient (CL), velocity (V) and blade force (F). These results are further validated with previous experimental results at same boundary conditions for to ensure the reliability of the analysis. The overall results show that NACA 0012 and NACA 0015 gives better performance in all three aspects of results (coefficient of lift, velocity, and force). Hence, present modifications are best suitable for increasing the performance of NACA 0012 and NACA 15 symmetrical aerofoil straight bladed VAWTs.

Keywords: Dimple; Gurney flap; Energy model; Spalart Allmaras model; ANSYS fluent (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (16)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544217304474
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:126:y:2017:i:c:p:766-795

DOI: 10.1016/j.energy.2017.03.071

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().