Figure 6
From: Modelling bacterial twitching in fluid flows: a CFD-DEM approach
Probability of the direction of motion of the cell as a function of wall shear stress: (a) If the fluid does not flow, the cell can twitch any direction on the surface (the probability of each angular bin is around 1/12 = 0.08; (b–d) As the fluid flow (or wall shear stress) increases, the cell tends to move upstream, the probability of bins from 90 to 270 degrees increases.
