Abstract
A twin unidirectional impulse turbine for wave energy conversion has been suggested in our previous study, and the
performance under unsteady flow has been investigated by quasi-steady analysis. In the present study, the performance
of twin impulse turbine under unsteady flow condition has been investigated by unsteady analysis of Computational
fluid dynamics. As a result, the mean efficiency of twin unidirectional impulse turbine under unsteady flow is lower
than the maximum efficiency of unidirectional impulse turbine. Moreover, it is verified that airflow goes backward in
the reverse turbine in low flow rates.
© 2016 Turbomachinery Society of Japan, Korean Fluid Machinery Association, Chinese Society of Engineering Thermophysics, IAHR
