We added the following statement to the end of Section 3.3: “The simulation results of the previous section for β > 0.5 are unlikely to be affected by the domain size, however, since the features in those simulations are on a much smaller scale than the domain size and are also more chaotic, as seen in the correlation length and the global alignment (Figure 5a,d).”
Thus, the length of a filament is not a model parameter.