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has been cited by the following article:

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

  AUTHORS: Palanisamy Mohan Kumar, Sudhakar Rao Rashmitha, Narasimalu Srikanth, Teik-Cheng Lim

  KEYWORDS: Aerodynamic Model, Wind Turbine, Double Multiple Stream Tube, Xfoil, Analytical

  JOURNAL NAME: Smart Grid and Renewable Energy, Vol.8 No.12, December 28, 2017

  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.