Abstract
Development of high efficiency turbine with good performance is one of the main topics in the field of developing wave energy converter. For the development and improvement of the turbine performance, the effect of wave condition on the turbine performance should be considered in detail. Also, water depth is an important factor because incident wave power to the turbine is considerably influenced by the wave particle amplitude of motion and the amplitude is closely related with the water depth. Therefore, in this study, the effect of water depth on the performance of a direct drive turbine(DDT) for wave energy converter is investigated using the DDT which is installed in two types of wave channel.<BR> The experimental results show that the DDT captures more wave energy under the condition of relatively shallow water depth. When the water depth is shallow, tile horizontal water particle amplitude of motion becomes wider and thus, the water power toward the turbine becomes larger.
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