Integral not working

NGSolve
,
1

In .geo, .pde days, I would evaluate voltage from magnetic fields as:

define linearform f2 -fespace=v
curlboundaryedge coil2 -imag
numproc evaluate np2a -linearform=f2 -gridfunction=u

but now with python vesion, I get errors while translating it as:

fes2 = ngs.HCurl(mesh, order=2, complex=True)
f1 = ngs.LinearForm(fes2)

coeffA = ngs.CoefficientFunction([ 1 if bnd == cname else 0 for bnd in
mesh.GetBoundaries()])# cname is coil2 of above case

f1 = ngs.LFI(‘curlboundaryedge’, coef=(coeffA))
tval = ngs.Integrate((1j * omega) * gfu * f1, mesh)

Here is the error:
TypeError: mul(): incompatible function arguments. The following argument types are supported:
1. (self: ngsolve.fem.CoefficientFunction, cf: ngsolve.fem.CoefficientFunction) → ngsolve.fem.CoefficientFunction
2. (self: ngsolve.fem.CoefficientFunction, value: float) → ngsolve.fem.CoefficientFunction
3. (self: ngsolve.fem.CoefficientFunction, value: complex) → ngsolve.fem.CoefficientFunction
4. (self: ngsolve.fem.CoefficientFunction, arg0: ngfem::DifferentialSymbol) → ngfem::SumOfIntegrals

2

hope you will be happy with the new style :slight_smile:

n = specialcf.normal(3)
Integrate (n*curl(gfu).Trace()*ds("top"), mesh)

The trace of curl(gfu) gives now a vector, which you have to dot with the normal-vector.