hfsym

Mapdl.hfsym(kcn='', xkey='', ykey='', zkey='', **kwargs)

Indicates the presence of symmetry planes for the computation of

APDL Command: HFSYM acoustic fields in the near and far field domains (beyond the finite element region).

Parameters:

kcn

Coordinate system reference number. KCN may be 0 (Cartesian), or any previously defined local Cartesian coordinate system number (>10). Defaults to 0.

xkey

Key for acoustic field boundary condition, as prescribed for the solution, corresponding to the x = constant plane:

None - No sound soft or sound hard boundary conditions (default).

SSB - Sound soft boundary (pressure = 0).

SHB - Sound hard boundary (normal velocity = 0).

ykey

Key for acoustic field boundary condition, as prescribed for the solution, corresponding to the y = constant plane:

None - No sound soft or sound hard boundary conditions (default).

SSB - Sound soft boundary (pressure = 0).

SHB - Sound hard boundary (normal velocity = 0).

zkey

Key for acoustic field boundary condition, as prescribed for the solution, corresponding to the z = constant plane:

None - No sound soft or sound hard boundary conditions (default).

SSB - Sound soft boundary (pressure = 0).

SHB - Sound hard boundary (normal velocity = 0).

Notes

HFSYM uses the image principle to indicate symmetry planes (x, y, or z = constant plane) for acoustic field computations outside the modeled domain. A sound hard boundary condition must be indicated even though it occurs as a natural boundary condition.

No menu paths are available for acoustic applications.