| In the past two decades, numerous studies on flapping wing motion have been conducted. The study of flapping wing motion was mainly driven by the potential applications in the design and development of micro air vehicles (MAVs). In the more recent years, the application of flapping wing motion for power generation has been gaining more attention due to the need in replacing fossil fuel with renewable energy in a flapping foil power generation system. The objective of this research is to study the effects of pitching motion frequency on the propulsion of flapping foil power generation system in a tandem configuration. The research was done numerically by utilizing ANSYS FLUENT v17 program against 2D pitching tandem foil model for three parametric studies, which are pitch amplitude (?), reduced frequency (f*), and pitching frequency difference of the tandem foil. The numerical analysis shows that the influence of ? is proportional to the drag generated by the pitching tandem foil system. The test with ? = 35o is the optimum parameter against the lift generation and ? = 60o is the optimum parameter against the system power required. Test with f* = 0,14 is the most beneficial parameter among other reduced frequency parameters due to the fact that pitching tandem foil system generated the optimum lift and required not too much of a power. And then the test with the C3 parameter (fFA = 4fAA) is the most beneficial parameter for the pitching tandem foil system compared to the other frequency difference parameters. Besides required not too much of a power, C3 parameter generated optimum lift and low drag. |