Abstract
Some frictional drag reduction technologies were inspired from marine creatures. When dolphins swim at high-speed, we can see skin folds on its abdominal region. In this research, we use wavy plates with three different silicone rubbers as the models of different parts of dolphins' skins. We have conducted the experiments of open channel flow over there plates to measure the velocity field and total drag acting on the plates. The results show that the total drag and the pressure drag of the softest plate are lowest among the three plates and the deformation of the softest plate is the greatest.
