boundary conditions

边界条件的设置项

PML_BOUNDARY_CONDITIONS = .false.

PML边界条件

STACEY_ABSORBING_CONDITIONS = .false.

Stacey吸收边界

两种吸收边界可以同时设置为false，也可以一个设置为false一个设置为true，但是不可两个都设置为true

未确定作用的设置项有：

NELEM_PML_THICHNESS = 3

ROTATA_PML_ACTIVATE = .false.

ROTATA_PML_ANGLE = 30.

K_MIN_PML = 1.0d0

K_MAX_PML = 1.0d0

damping_change_factor_acoustic = 0.5d0

damping_change_factor_elastic = 1.0d0

PML_PARAMETER_ADJUSTMENT = .false.

ADD_PERIODIC_CONDITIONS = .false.

PERIODIC_HORIZ_DIST = 4000.d0