Figure 6

Boundaries for the LV growth rate function $f\left(t\right)$to generate growing trends for internal radius and wall thickness. The dotted cyan line in the middle is our $f\left(t\right)$ for ${\tau }_R=0.22$ mons, $D=2.5$ and ${\tau }_f=5.6$ mons. The star-marked blue line and square-marked black line form boundaries for our selection of parameters. Between the green curve with circle markers and red one with hexagram markers is the region satisfying conditions determined by equations (30-31).