Research in Fluid Dynamical Specification of Hand Palms in Freestyle Swimming

The characteristics of lift and drag forces are influenced by the configuration of a hand palm. The fluid dynamical characteristics of hand palms and that of a delta wing are compared experimentally. Delta wing is a simplified model of a hand palm. Three-dimensional velocity distribution of the wake flow was measured by X shaped hot wire probe. The results of these experiments showed clearly that the characteristics of hand palms in swimming were similar to that of delta wings.