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Custom Background

In certain cases, a different background may be desired in only part of the parent simulation domain. In that case, a second, smaller, nested background can be created within the parent domain. More than one custom background may be used in a given simulation.

Instructions

  1. ClickCustom Background 16 Custom Background within the Simulation section under the EMA3D tab in the ribbon.

    2. custombackground 1

  2. In the Properties Panel, adjust the custom background properties as desired.

    3. custombackground 2

  3. Use any of the Select Geometry tool, the drag arrows that appear on screen, or the Maximum and Minimum Bounds in the Properties Panel to set the region for the custom background. The custom background will appear as a blue region within the domain. The custom background must exist entirely within the main domain.

    4. custombackground 3

  4. Click OKCheck Image 16 to complete the custom background definition.

  5. Adjust the definitions of the custom background at any time by right clicking it within the Simulation Tree and selecting Edit from the pop-up menu.

    6. custombackground 4
General
Options

Entry

Meaning

Name

Name of the custom background.

Properties
Properties Options

Entry

Meaning

Conductivity

Background conductivity [S/m]

Magnetic Conductivity

Background magnetic conductivity

Permeability

Background absolute permeability [H/m]

Permittivity

Background absolute permittivity [F/m]

Relative Air Density

Background relative air density [0-1]

Water Content

Background absolute percentage of water content [0-6%]

X

Minimum X location of the background

Y

Minimum Y location of the background

Z

Minimum Z location of the background

X

Maximum X location of the background

Y

Maximum Y location of the background

Z

Maximum Z location of the background

See Also

Other Resources

Domain

EMA3D – © 2026 EMA, Inc. Unauthorized use, distribution, or duplication is prohibited.