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view plotDerivative.jl @ 1692:de2c4b2663b4 feature/sbp_operators/laplace_curvilinear

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Add accuracy tests for normal derivative
author Jonatan Werpers <jonatan@werpers.com>
date Mon, 26 Aug 2024 16:15:25 +0200
parents 8d505e9bc715
children
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g = sbp.Grid.EquidistantGrid((200,), (0.0,), (2pi,))
op =sbp.readOperator("d2_4th.txt","h_4th.txt")
Laplace = sbp.Laplace(g,1.0,op)

init(x) = cos(x)
v = sbp.Grid.evalOn(g,init)
u = zeros(length(v))

sbp.apply!(Laplace,u,v)

@show u
sbp.Grid.plotgridfunction(g,u)