Smart Grid and Renewable Energy

Volume 8, Issue 12 (December 2017)

ISSN Print: 2151-481X   ISSN Online: 2151-4844

Google-based Impact Factor: 0.88  Citations  

Wind Tunnel Validation of Double Multiple Streamtube Model for Vertical Axis Wind Turbine

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DOI: 10.4236/sgre.2017.812027    1,273 Downloads   3,065 Views  Citations

ABSTRACT

The performance and annual energy output have to be predicted to maximize the economic benefits from a wind turbine. Mathematically predicting the performance of Darrieus type lift based turbines are challenging due to the inconsistent angle of attack, blade wake interaction and local induced velocities giving rise to complex flow physics. A reliable and validated mathematical model is therefore essential to optimize the various design parameters prior to manufacture. The objective of the current study is to evaluate widely employed aerodynamic models based on their prediction accuracy, limitations, and computational requirements. Double multiple stream tube models have been discussed in detail and the predictions are experimentally validated through the wind tunnel test of three-bladed H-Darrieus rotor in terms of torque and power coefficient. The possible sources for the deviation between the predicted and measured values have been discussed and concluded with potential solutions.

Share and Cite:

Kumar, P. , Rashmitha, S. , Srikanth, N. and Lim, T. (2017) Wind Tunnel Validation of Double Multiple Streamtube Model for Vertical Axis Wind Turbine. Smart Grid and Renewable Energy, 8, 412-424. doi: 10.4236/sgre.2017.812027.

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