Macroscopic numerical evaluation of heat generation in a bulk high Tc superconductor during pulsed field magnetization

被引：25

作者：

Tsuchimoto, M ^{[1
]}

Morikawa, K ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1999年 / 9卷 / 01期

关键词：

bulk HTS; macroscopic numerical simulation; pulsed field magnetization; superconducting magnet;

D O I：

10.1109/77.763257

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Pulsed-field magnetization of a bulk high Tc superconductor (HTS) is evaluated by using a macroscopic numerical simulation code. Local heat generation in the HTS during the pulsed-field magnetization is discussed to clarify the dynamic magnetization process. Nonlinear dependence of shielding current on the dynamic magnetic field is considered by using the flux flow-creep model, Dependence of flow resistivity on the magnetic field and temperature are also evaluated with the Bardeen-Stephen and the Tinkham models. It is numerically confirmed that reported experimental results are due to a decrease of the shielding current caused by local heat generation.

引用

页码：66 / 70

页数：5

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