Button "Ivantsov":
The Ivantsov parabola is drawn. P denotes the Peclet number
and xN sets the x-range in which the N collocation points
are chosen.
Button "solve":
The integro-differential equation below is solved for some
specified anisotropy alpha and some specified dimensionless
capillarity length d.
Button "select":
The slope at the tip as a function of d is plotted.
dA and dB set the d-range and m sets the number of points
for which the integro-differential equation is solved.
Solvability theory proposes that the largest root is the
selected steady-state.
Example:
xN=0.4 , N=11 , P=1.0 , d=0.014 , alpha=0.227
The source code is available here.