In [1]:

    

include("../src/HPFEM.jl")


    

    
Out[1]:





HPFEM

In [2]:

    

nel = 5
nnodes = nel + 1
idir = Int[]#1,nnodes]
M = 5
Q = M+2
bas = HPFEM.Basis1d(M,Q)
lmap = HPFEM.locmap(bas)
dof = HPFEM.DofMap1d(lmap, nnodes, idir, true);


    

In [3]:

    

uexact(x) = sin(x)
rhsfun(x) = 2*sin(x)


    

    
Out[3]:





rhsfun (generic function with 1 method)

In [4]:

    

a = 1.0π
b = 3.0π
nodes = collect(linspace(a, b, nnodes));


    

In [5]:

    

elems = [HPFEM.Element1d(e, nodes[e], nodes[e+1], bas) for e = 1:nel];


    

In [6]:

    

solver = HPFEM.CholeskySC(dof, HPFEM.BBMatrix);


    

In [7]:

    

for e = 1:nel
    Ae = zeros(M, M)
    HPFEM.add_stiff_matrix!(bas, elems[e], Ae)
    HPFEM.add_mass_matrix!(bas, elems[e], Ae)
    HPFEM.add_local_matrix(solver, e, Ae)
end


    

In [8]:

    

solver.Abb


    

    
Out[8]:





HPFEM.BBMatrix{Float64}(5,5,5x5 Array{Float64,2}:
  2.35257   -0.619392   0.0        0.0       -0.619392
 -0.619392   2.35257   -0.619392   0.0        0.0     
  0.0       -0.619392   2.35257   -0.619392   0.0     
  0.0        0.0       -0.619392   2.35257   -0.619392
 -0.619392   0.0        0.0       -0.619392   2.35257 ,#undef)

In [9]:

    

Fe = zeros(HPFEM.nmodes(lmap), nel)

for e = 1:nel
    fe = rhsfun(elems[e].x)
    HPFEM.add_rhs!(bas, elems[e], fe, sub(Fe, :, e))
end

# Apply Dirichilet BCs:
#Fe[1,1] = uexact(a);
#Fe[2,nel] = uexact(b);


    

In [10]:

    

HPFEM.solve!(solver, Fe);


    

In [11]:

    

nξ = 101
ξ = collect(linspace(-1,1,nξ));
ϕ = zeros(nξ, M)
for i = 1:M
    ϕ[:,i] = bas(ξ, i)
end

Ue = ϕ * Fe;


    

In [12]:

    

using PyPlot
maxerr = 0.0
for e = 1:nel
    el = elems[e]
    x = (1-ξ)*el.a/2 + (1+ξ)*el.b/2 
    uu = uexact(x)
    err = maxabs(uu-Ue[:,e])
    if err > maxerr maxerr = err end
        
    plot(x, Ue[:,e], "r", x, uu, "b")
end
maxerr


    

    













    
Out[12]:





7.476079668847224e-5

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