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sim.name = "scatterer" -- simulation name
sim.dt = 1e-12 -- timestep size
sim.timesteps = 10001 -- num of iterations
sim.gmsh_model = "scatterer.geo" -- gmsh model filename
sim.use_gpu = 0 -- 0: cpu, 1: gpu
sim.approx_order = 1 -- approximation order
sim.time_integrator = "rk4" -- time integration method
postpro.silo_output_rate = 10 -- rate at which to write silo files
postpro.cycle_print_rate = 10 -- console print rate
local air = {1}
for i,v in ipairs(air) do
materials[v] = {}
materials[v].epsilon = 1
materials[v].mu = 1
materials[v].sigma = 0
end
-- ** Boundary conditions **
local absorbing_bcs = {17, 18, 19, 20, 21}
for i,v in ipairs(absorbing_bcs) do
bndconds[v] = {}
bndconds[v].kind = "impedance"
end
local pmc = {13,14}
for i,v in ipairs(pmc) do
bndconds[v] = {}
bndconds[v].kind = "pmc"
end
local freq = 3e9;
function srcfun(tag, x, y, z, t)
Ez = math.sin(2*math.pi*freq*t)
return 0,0,Ez
end
local source = {12}
for i,v in ipairs(source) do
bndconds[v] = {}
bndconds[v].kind = "plane_wave_E"
bndconds[v].source = srcfun;
end