## Capacitance of a cylindrical capacitor

In this section the capacitance of a cylindrical capacitor is calculated with inner radius 1 m, outer radius 2 m and length 10 m. The capacitor is filled with air, its permittivity is    CNm. An extract of the input deck, which is part of the test example suite, is shown below:

*NODE, NSET=Nall
...
*ELEMENT, TYPE=C3D20, ELSET=Eall
...
*NSET,NSET=Nin
1,
2,
...
*NSET,NSET=Nout
57,
58,
...
*SURFACE,NAME=S1,TYPE=ELEMENT
6,S3
1,S3
*MATERIAL,NAME=EL
*CONDUCTIVITY
8.8541878176e-12
*SOLID SECTION,ELSET=Eall,MATERIAL=EL
*STEP