Figure 3.
The influence of the surface on computed sperm trajectories in a background flow and surface repulsion potential, specified by the parameters of table 2. (a) A virtual sperm in the presence of a no-slip surface is considered with sperm parameters values given in table 1 and also that Γ = ∞, α = −0.2, θinit = 0, X(s = 0, t = 0) = (0, 0, h). The projection of the trajectory onto the plane of the no-slip surface is plotted for this sperm with the arrow showing the direction of swimming for different non-dimensional starting heights, h, above the no-slip surface. (b) A further breakdown of this virtual sperm's trajectory, with plots of z, its distance from the no-slip surface, as a function of time for different starting heights above the no-slip surface. (Online version in colour.)