Energy and exergy analyzing of a wind turbine in free stream and wind tunnel in CFD domain based on actuator disc technique

Ali Khanjari, Esmail Mahmoodi and Mohammad Hossien Ahmadi

Renewable Energy, 2020, vol. 160, issue C, 231-249

Abstract: In this article, the effects of a wind tunnel on the MEXICO wind turbine experiment based on a generalized Actuator Disc model and the second law of thermodynamics are investigated. In this model, both Computational Fluid Dynamic (CFD) and a developed User Defined Function (UDF) code are used to simulate the wind turbine’s performance in both wind tunnel and free stream modeling. Metrological variables such as ambient pressure and temperature, velocity, and specific humidity are considered to analyze the wind turbine’s performance. The maximum relative exergy efficiency difference between the wind tunnel and free stream at the wind speed of 16 m s-1, is 7.01%. Also, pressure, temperature and relative humidity, which mainly are neglected in energy analysis, have a considerable effect on wind turbine performance in both wind tunnel and the free stream conditions. It is shown that the combination of the actuator disc and the second law of thermodynamics provides a better insight compared with the first law analysis; therefore, it provides an appropriate approach for wind power simulation.

Keywords: Actuator disc model; Energy and exergy efficiencies; MEXICO wind Turbine; The first and second law of thermodynamics (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:160:y:2020:i:c:p:231-249

DOI: 10.1016/j.renene.2020.05.183

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