We added the following clarification to the end of the non-dimensionalization section: “In the subsequent sections, simulations for β = 0 use a modified interaction force such that there is no cohesion, but the hard core repulsion is maintained, i.e., 0 0 c F = for 0 h ≥ , otherwise 0 c c F F = with β = 0.125.”
The authors find that results at beta = 0 are most similar to the experimental reticulate patterns. In the force model, there are three forces: elastic, gliding, and contact/cohesion. The contact/cohesion force is presented in equation 12, and is proportional to epsilon. After Equation 23, the authors define beta = epsilon/(zeta⋅v0), implying that there will be no contact/cohesion forces when beta = 0. However, in the results of Figures 3, 4, and 5 the results for beta = 0 clearly show interactions between the filaments. The fourth paragraph of section 2.9 describes a hard-core interaction, which appears to be the source of the patterns when beta = 0. This hard-core interaction should be mentioned after Equation 12, since it is not simply an implementation issue but the dominant interaction with beta = 0.