Author(s)

S. Mao & C. A. Luongo

Abstract

Numerical simulation of moving boundary problems in superconducting magnets S. Mao & C. A. Luongo Center for Advanced Power Systems, and National High Magnetic Field Laboratory, Florida State University, USA Abstract In the design and operation of superconducting magnets, quench is always an important consideration. Superconductors are designed to operate at very high current density, for example, 10'' ~ / m ~ , so when an external disturbance is strong enough, the superconductor will go from the superconducting state (zero resistance) to the normal state (resistive conductor), which constitutes a quench. The dangers of overheating if a magnet quenches are obvious. A high order finite difference scheme is introduced to deal with thermohydraulic quench simulation in superconducting magnets, specifically in the case of cable-in-conduit conductors (CICC). Liquid helium flow in CICC is governed by the unsteady convection-diffusion equations, in the regime of low Mach number and high Reynolds numb

Keywords