Abstract
The behavior of scallops Patinopecten yessoensis due to current flow and oscillatory flow was experimentally studied. The conditions for incipient movement of scallop was clarified. The scallops swim downstream in the case that the velocity of current flow is less than 20cm/s, they are force to move downstream by the flow in the case that its velocity is more than 30cm/s. The experimental values measuring the movement of scallops on both smooth and rough surface fixed beds could be theoretically explained by setting CD (drag coefficient), CM (added mass coefficient) and μ'(coefficient of dynamic friction) to 1.0, 0.5 and 0.1 respectively.
