{d a} instead of {curl a} in formulation
Hello,
Regarding a simple understanding question: Magnetostatic formulation is usually given using the following elements:
FunctionSpace { {Name Hcurl_a_3D ; Type Form1 ; ...
Formulation { Name MagStaDyn_av_js_3D ; Type FemEquation ; Quantity { { Name a ; Type Local ; NameOfSpace Hcurl_a_3D ; } ...}
Equation { Galerkin { [ nu[{d a}] * Dof{d a} , {d a} ] ; In Domain ; Jacobian Vol ; Integration II ; } ...
May I ask why b=curl a
is called by {d a}
instead of {curl a}
?
I understand that {d a}
is the external derivative and is equivalent to {Grad a}
.
Is it that a
is not the magnetic vector potential but the scalar potential for the magnetic (vector) field. b = curl A
holds but the relevant quantity is b = grad a
?
Thanks!
Update - seems like as a
is defined as a form1, a curl conform field, d
is applied and should equivalent to curl
- to be validated?