Summary

This section introduces the steady-state current field analysis function using a simple model. This function is implemented together with the "Electrostatic Field Analysis" function and allows you to obtain the steady-state current distribution in a conductor when DC is applied. If you want to obtain the magnetic field distribution due to the current as well, please refer to "DC Current Field Analysis".

Explanation

A two-dimensional analysis is performed using the conductor model simulating the porous material shown in Fig. 1. A DC current of 10 A is applied from the top surface, and the granular conductor is set to 1/10 of the conductivity of the surrounding conductors. Periodic boundary conditions are assumed in the left and right directions. Fig. 2 shows the current density distribution diagram. Since the conductivities differ by a factor of 10, it can be seen that the current flows in such a way as to almost avoid the granular conductors.

Next, let us analyze the granular conductor as a nonconductor. Fig. 3 shows the current density distribution, which is almost the same as in Fig. 2, but the current entering the nonconductor is zero.

This is a brief introduction to steady-state current field analysis. Since this function only models the conductive part, no mesh is needed for the non-conductive part such as air. It is useful when you want to analyze a steady-state current field.

Fig. 1 Two-dimensional porous model

Fig.2 Current density vector distribution [$A/m^2$]

Next, let us analyze a granular conductor as a nonconductor. Fig. 3 shows the current density distribution, which is almost the same as in Fig. 2, but the current entering the nonconductor is zero.

Fig.3 Current density vector distribution [$A/m^2$]

This is a brief introduction to steady-state current field analysis. This function models only the conductive part, so meshing of air and other non-conductive parts is not necessary. It is useful when you want to analyze a steady-state current field.