液氦间接冷却超导磁体瞬态稳定性分析

本文根据传热学Fourier定律,建立了用铝骨架间接冷却的超导磁体在能量脉冲的作用下的瞬态传热模型。在超导体内部各向同性的假设前提下将其简化为一维瞬态导热问题,并求出了它的分析解。在此基础上,运用计算机对这种间接冷却的超导磁体进行了模拟实验,得出了在不同电流密度,不同能量脉冲、不同线圈厚度以及不同冷却条件下的正常区收敛速度的四组曲线,并对计算结果进行了解释。

Transient Stability of the Indirectly N_2-Cooled Superconducting Magnet

The transient heat transfer model for the indirectly cooled superconducting magnets under the action of the energy pulse has been worked out by Fourier Law: By assuming that it is isotropic in the superconducting magnet, the analysis is reduced to a one-dimensional transient heat transfer problem and an analytic solution is found.Simulation experiments on the superconducting magnet with computer have been performed and four sets of curves showing the relationship between the convergence rate in the normal region and the currents, the energy pulses, the thickness of the coil and the cooling condition of the magnet respectively have been obtained. Test results are discussed.