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view plotDerivative2d.jl @ 611:e71f2f81b5f8 feature/volume_and_boundary_operators

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NOT WORKING: Draft implementation of VolumeOperator and make SecondDerivative specialize it. Reformulate Laplace for the new SecondDerivative.
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Sat, 05 Dec 2020 19:14:39 +0100
parents d61bfc8cf6a5
children
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include("sbpPlot.jl")

g = sbp.Grid.EquidistantGrid((100,75), (0.0, 0.0), (2pi, 3/2*pi))
op = sbp.readOperator("d2_4th.txt","h_4th.txt")
Laplace = sbp.Laplace(g, 1.0, op)

init(x,y) = sin(x) + cos(y)
v = sbp.Grid.evalOn(g,init)
u = zero(v)

sbp.apply!(Laplace,u,v)

#@show u
#@show u'*u

plotgridfunction(g,u)