Some parameters denoted symbolic function can be defined as symbolic functions which can depend on x, y, z and sometimes t.
Wall conditions
For compressible flows, wall conditions can be applied according to the type
wall condition with adiabatic energy condition
An additional WALL_TEMP=<value> is required as an uniform imposed temperature.
An additional WALL_FLUX=<value> is required as an uniform imposed flux (W/m2).
For each of them, a WALL_VELOCITY=<vector> can be defined.
Inflow conditions
There are currently two types of in-flow boundary conditions
BLOCK:BOCO
FAMILY = my_mesh_tag
TYPE = SUBSONIC_INLET
PI = <symbolic function>
TI = <symbolic function> or S = <symbolic function>
DIR_X= <symbolic function>
DIR_Y= <symbolic function>
DIR_Z= <symbolic function>
ENDBLOCK
BLOCK:BOCO
FAMILY = my_mesh_tag
TYPE = SUPERSONIC_INLET
PI = <symbolic function> ! (total or stagnation pressure)
TI = <symbolic function> ! (total or stagnation temperature)
MACH= <symbolic function>
DIR_X= <symbolic function>
DIR_Y= <symbolic function>
DIR_Z= <symbolic function>
ENDBLOCK
Entropy S is defined by PS/RHO^gamma
Direction of velocity can also be defined directly with
DIRECTION = (nx, ny, nz) ! 3 <value> components
but only as constant components instead of DIR_* symbolic functions.
Outflow conditions
Like inflow conditions, there are currently two types of out-flow boundary conditions
BLOCK:BOCO
FAMILY = my_mesh_tag
TYPE = SUBSONIC_OUTLET
P = <symbolic function> ! (static pressure)
ENDBLOCK
Although no user parameter is applied, the following definition must be specified.
BLOCK:BOCO
FAMILY = my_mesh_tag
TYPE = SUPERSONIC_OUTLET
ENDBLOCK
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