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고진환(Jin Hwan Ko),김지웅(Jee Woong Kim),박수형(Soo Hyung Park),투엔르광(Tuyen Quang Le),변도영(Doyoung Byun) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
As a novel bio-mimetic technology, flapping foils have attracted much attention, owing to their capacity of producing thrust with high efficiency. Flapping foils may fine applications on autonomous underwater vehicle, flapping micro-air vehicle and etc. In design stage of the new type vehicles, computational fluid dynamics (CFD) can be used to explore performance of the flapping foils. One of challenging problems in CFD is known to be the development of robust, efficient grid deformation algorithms for the large deformation of the foils. In this paper, a volume grid deformation is developed based on Finite Macro-Element and Transfinite Interpolation and then interfaces a structured multi-block Navier-Stokes code. As demonstrated by airfoils with pitching or heaving motion, the force results of presented method is in good agreement with those of a conventional method and is also close to experimental results.