Key points are not available for this paper at this time.
The collective locomotion of two tandem autopropelled flapping foils is greatly affected by the phase difference. Two distinct vortex interactions are observed---merging interaction and broken interaction---which respectively result in the highest efficiency for the follower and the leader.
Lin et al. (Fri,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: