Stability simulation of a cable-in-conduit conductor on a non-uniform mesh

A new stability simulation code of a cable-in-conduit conductor (CICC), POCHI, has been developed. In POCHI, a large amount of CPU time could be saved by applying an implicit time-dependent scheme and linearization technique for a fluid dynamic equation. This linearization also makes the scheme stable. However, the use of the uniform mesh makes the CPU time long for stability simulation of a long CICC. POCHI has therefore been improved to make the grids fined only on the necessary regions. As a result, more CPU time could be saved. The simulated and experimental results of stability for a small CICC were compared for verification of the improved code. The results were in good agreement, resulting in verification of the code.