Hi everyone,
I am trying to model a 2D phononic crystal in COMSOL. It is essentially a square with a hole at its center. Does anyone know how to set the Bloch boundary condition for the elastic PDE?
Here is the condition:
u(x)=u(x+R)exp(ik.R) or
usrc=udest*exp(ik.R).
where R is the lattice displacement vector.
Note that the normal PBC accessible from COMSOL does not have the phase factor.
Your help would be greatly appreciated.
I am trying to model a 2D phononic crystal in COMSOL. It is essentially a square with a hole at its center. Does anyone know how to set the Bloch boundary condition for the elastic PDE?
Here is the condition:
u(x)=u(x+R)exp(ik.R) or
usrc=udest*exp(ik.R).
where R is the lattice displacement vector.
Note that the normal PBC accessible from COMSOL does not have the phase factor.
Your help would be greatly appreciated.
