Fig. 9. Presentation of the sperm–egg collision data using dimensionless variables. (A) The highly motile sperm–egg collision data. The normalized sperm diffusion coefficient values are obtained using , where t_sim is the simulation time (1800 s) and _egg is the egg diameter. The normalized collision times are the ratio of time required for 10/30 highly motile sperm to collide the egg, to the simulation time. The values along y-axis are the average collision time values. (B) The bulk sperm–egg collision data. The normalized sperm diffusion coefficient values are obtained using , where t_sim is the simulation time (1800 s) and _egg is the egg diameter. The normalized number of collision values are obtained by dividing the number of bulk sperm hitting the egg in 1800 s by the initial number of sperm. The values along y-axis are average values of number of collisions. Lines joining data points show trends only.