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Mechanics of Undulatory Swimming in a Frictional Fluid
Figure 3
Comparison of swimming performance in experiment and models.
A: Average forward swimming speed versus undulation frequency in 3 mm particles. Solid symbols correspond to biological measurements, and the solid and dashed lines correspond to the RFT (for a uniform body) and simulation (for a tapered body) predictions, respectively. B: Wave efficiency (
), defined as the ratio of the forward swimming speed to the wave speed, measured from biological experiment (the slope of 
versus 
in (A)), simulation and RFT. For the RFT (solid bar), the lower and upper limits of the 
deviation correspond to maximum (flat head) and 30% of the maximum head drag, while the simulation (hatched) corresponds to the uniform body and tapered body shapes, respectively. In simulation, 
and 
Hz. Figure adapted from [21].
doi: https://doi.org/10.1371/journal.pcbi.1002810.g003