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Validating the ideal configuration and mutual coupling effect among Savonius wind turbine clusters using free rotation analysis

机译：Validating the ideal configuration and mutual coupling effect among Savonius wind turbine clusters using free rotation analysis

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摘要

Savonius wind turbines are low-efficiency drag-driven turbines, however an efficient clustering of Savonius turbines in close proximity boosts positive coupling among the turbines. The primary goal of this research is to analyze the flow-driven characterization of Savonius wind turbine clusters using a modified wind turbine in order to forecast the positive couple effect and enhanced power coefficient. The 2D numerical study is modeled using open source CFD toolbox OpenFOAM-v1812 with unsteady RANS solver overPimpleDyMFoam adopting dynamic overset mesh approach. For a two turbine configuration, the wind-driven positive interaction is determined by accounting the effective separation distance with linear and oblique arrangement, as well as with varied rotation direction (Co-rotating and Counter-rotating turbines). The modified two turbine oblique and linear clusters display an overall torque coefficient Ct of 20.18% and 17.04% higher than the single turbine study.

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