Affiliations: Satellite Venture Business Laboratory, 1-1 Sensui-cho,
Tobata-ku, Kitakyushu-shi, Fukuoka, 804-8550, Japan. E-mail:
cjyang70@pivlab.net | Division of Mechanical and Information Engineering,
College of Engineering, Korea Maritime University, 1 Dongsam-dong Youngdo-ku,
Busan, 606-791, Korea
Abstract: It is known that an oscillating foil can produce a thrust force
through the generation of a reverse Kármán vortex street
and this can be expected to be a new highly effective propulsion system. A
heaving foil model was made and it was operated within a circulating water
channel. The wake formation behind the heaving foil was visualized using PIV
method and a dynamic thrust force was measured using a mini 6-axis force sensor
based on force and moment detectors. We examined various conditions such as
reduced frequency and amplitude in NACA 0010 profile. The vortical patterns in
the wake were classified according to the wake mode and force data.