Top: Time step independence study results for model with 0% stenosis, comparing glottal width for three time step sizes during the first 0.04 sec of the simulations. ––––– Model time step, - - - - - - - Doubled time step, – – – – - Halved time step. Bottom: Grid independence study results for model with 0% stenosis, comparing glottal width for three grid densities. ––––– Model grid density, - - - - - - - Grid-halved density, – – – – - Grid-doubled density.