About definition

General Discussion
1

I would like to ask how to define a three-dimensional curl operator in FreeFEM++ so that it can be used later in “solve…= int3d curlu*curlv”
sorry guys :smiling_face_with_tear: i am a new guy

2

You can use either of these

macro Curl(ux,uy,uz)[dy(uz)-dz(uy), dz(ux)-dx(uz), dx(uy)-dy(ux)] //

or

macro curl(u) [dy(u#z)-dz(u#y), dz(u#x)-dx(u#z), dx(u#y)-dy(u#x)] //

usage is

fespace VhGF(Th, [P2,P2,P2]);
VhGF [Ax,Ay,Az],[Bx,By,Bz];;
[Bx,By,Bz]=Curl(Ax,Ay,Az]); // method 1
[Bx,By,Bz]=curl(A);//method 2