Hydroclynamic Analysis of a Drag-Type Water Turbine

摘要

In recent years, an interest in hydropower has been growing in the wake of environmental pollution, rising energy demand and depleting fossil fuel resources. Water turbines, which have been widely used for hydropower generation, can be classified as lift type or drag type, depending on the driving force that rotates the rotor. Drag-type water turbines, like the Savonius, have the advantages of low-noise operation, good self-start performance and are more suitable for small-scale, distributed power generation. However, they are less efficient compared with their lift-type counterparts, despite the considerable effort made to enhance the performance.