D.Zeiner-Gundersen Hydrodynamic theory for a flexible profile vertical axis turbine |
Applied hydromechanics, Vol. 16 (88) ¹ 3, (2014) |
| A novel vertical axis turbine with flexible profiles was designed and previously tested on-site in a river channel. The turbine design was based on initial simplified mathematical analyses and model testing done to optimize turbine interactions with the surrounding hydrodynamic environment. A study has been performed to evaluate several analytical models with respect to their complexity, accuracy, and computational time. The Cascade model was considered overall best suited for further analytical studies and optimizing the design of the flexible profile turbine. Herein, the original Cascade model was combined with improved dynamic stall effects, flow curvature effects, and profile pitching. After such improvements, the current model becomes comparable with those used for complex computational fluid dynamic analysis, but does not require significant computational time and expense. Hence, the model proposed in this study can be used for rapid assessment of field-and lab-based experiments and the design optimization process to improve turbine function and design in different environments. |
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KEY WORDS: flexible profile turbine, hydrodynamics, Cascade model |
| TEXT LANGUAGE: English |