PMLSIZE

PMLSIZE, FREQB, FREQE, DMIN, DMAX, THICK, ANGLE, WAVESPEED
Determines number of PML or IPML layers.

Compatible Products: – | – | – | Enterprise | Ent PP | Ent Solver | –

FREQB

Minimum operating frequency (no default).

FREQE

Maximum operating frequency (defaults to FREQB).

DMIN

Minimum distance from the radiation source to the PML or IPML interface (no default).

DMAX

Maximum distance from the radiation source to the PML or IPML interface (defaults to DMIN).

THICK

Thickness of the PML or IPML region (defaults to 0).

ANGLE

Incident angle of wave to the PML or IPML interface (defaults to 0).

WAVESPEED

Wave speed in PML or IPML medium (defaults to 343.24 m/s).

Notes

PMLSIZE determines the number of PML or IPML layers for acceptable numerical accuracy.

PMLSIZE must be issued before any meshing commands. If the thickness of the PML or IPML region is known, it determines an element edge length (h) and issues ESIZE,h. If the thickness of the PML or IPML region is unknown, it determines the number of layers (n) and issues ESIZE,,n.

See Artificially Matched Layers in the Mechanical APDL Acoustic Analysis Guide for more information about using perfectly matched layers (PML) and irregular perfectly matched layers (IPML).

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Release 18.2 - © ANSYS, Inc. All rights reserved.