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Velocity vectors for the local fluid velocity depicted in the fixed plane of the beating flagellum. The Ca2+ concentration along the length of the flagellum is shown for (a) t =1.875, (b) t =22.125, (c) t =51.375 nondimensional time. The solid black circle denotes the head side of the flagellum. This simulation had a constant tensile stiffness S1, and kA=0.3 if ζ(s, t) > 0 and kA = 0.5 if ζ(s, t) < 0.
