{ STAGE_VS.PDE
This problem is a modification of STAGES.PDE in which the VERSUS qualifier
has been used to change the abcissa of the history plot.
}
title 'Staged Problem - Versus parameter'
select
stages=3
errlim = staged(0.01, 0.001, 0.0005)
Variables
u
definitions
scale = staged(1, 2, 4, 8) { extra value ignored }
a = 1/scale
Initial values
u = 1 - (x-1)^2 - (y-1)^2
equations
U: div(a*grad(u)) + scale*u*dx(u) +4 = 0;
boundaries
region 1
start(0,0)
value(u)=0
line to (2,0) to (2,2) to (0,2) to close
monitors
contour(u)
plots
surface(u) report scale as "Scale"
contour(u) report scale as "Scale"
histories
history(integral(u)) versus scale
end
Page url: index.html?usage_stage_vs.html