pmlopt

Mapdl.pmlopt(esys='', lab='', xminus='', xplus='', yminus='', yplus='', zminus='', zplus='', **kwargs)

Defines perfectly matched layers (PMLs) for acoustic and structural

APDL Command: PMLOPT analyses.

Parameters:

esys

Element coordinate system number. ESYS may be 0 (global Cartesian) or any previously defined local Cartesian coordinate system number (>10). Defaults to 0.

lab

Label defining the number of dimensions:

ONE - A one-dimensional PML region.

THREE - A three-dimensional PML region (default).

xminus

For harmonic analysis, normal reflection coefficient in negative X direction of ESYS. Defaults to 1.E−3 (equivalent to -60 dB) for a harmonic analysis and 30 for a static structural analysis.

xplus

For harmonic analysis, normal reflection coefficient in positive X direction of ESYS. Defaults to 1.E−3 (equivalent to -60 dB) for a harmonic analysis and 30 for a static structural analysis.

yminus

For harmonic analysis, normal reflection coefficient in negative Y direction of ESYS. Defaults to 1.E−3 (equivalent to -60 dB) for a harmonic analysis and 30 for a static structural analysis.

yplus

For harmonic analysis, normal reflection coefficient in positive Y direction of ESYS. Defaults to 1.E−3 (equivalent to -60 dB) for a harmonic analysis and 30 for a static structural analysis.

zminus

For harmonic analysis, normal reflection coefficient in negative Z direction of ESYS. Defaults to 1.E−3 (equivalent to -60 dB) for a harmonic analysis and 30 for a static structural analysis.

zplus

For harmonic analysis, normal reflection coefficient in positive Z direction of ESYS. Defaults to 1.E−3 (equivalent to -60 dB) for a harmonic analysis and 30 for a static structural analysis.

Notes

PMLOPT defines perfectly matched layers (PML) for acoustic or structural analyses. Each PML region must have a uniquely defined element coordinate system. Normal reflection coefficient values for a harmonic analysis must be less than 1.

Issue PMLOPT,STAT to list the current normal reflection coefficient or attenuation factor settings for a PML region. Issue PMLOPT,CLEAR to clear all normal reflection coefficient settings and restore them to the defaults. Issue PMLOPT,ESYS,CLEAR to clear all normal reflection coefficient settings for this element coordinate system and restore them to the defaults.