skin_depth

emg3d.meshes.skin_depth(frequency, conductivity, mu=1.25663706212e-06, precision=0)

Return skin depth for provided frequency and conductivity.

The skin depth \(\delta\) (m) is given by

(32)\[\delta = \sqrt{\frac{2}{\omega\sigma\mu}}\ ,\]

where \(\omega=2\pi f\) is angular frequency of frequency \(f\) (Hz), \(\sigma\) is conductivity (S/m), and \(\mu\) is magnetic permeability (H/m).

Parameters:

frequency : float

Frequency (Hz).

conductivity : float

Conductivity (S/m).

mu : float, optional

Magnetic permeability (H/m); default is \(\mu_0\).

precision : int, optional

Precision of the return skin depth. Default is 0, hence meters.

Returns:

skindepth : float

Skin depth (m).