Hi,everyone! I have some question about partial differential operator. We know the ampere's law: J=curlH. So if we have a wire along Z axis, we have Jz=curl.Hz. In comsol Hyx means the x component of the gradient of Hy (is this sure? ), then we have curl.Hz=Hyx-Hxy. But in the result part, I make the expression to be : mfh.Jz-(Hyx-Hxy) , the output is not 0. What's wrong with it? In my opinion, Hyx doesn't mean the x component of the gradient of Hy, maybe it means the x component of the derivative of Hy. So, what's the partial differential operator in COMSOL?
Any suggestions you give will help me a lot.Thank you.