40-T混合磁体外超导线圈迫流氦流动摩擦系数分析

发布时间：2018-06-15 05:09

  本文选题：摩擦系数 + 流动压降　； 参考：《低温工程》2017年03期

【摘要】：40-T混合磁体外超导磁体使用4.5 K超临界氦进行迫流冷却。迫流氦在管内电缆导体(CICC)内的流动过程受到摩擦阻力的影响会造成一定的压降和热量产生,同时由外界带来的热量也会由迫流氦带走来让磁体保持在超导温区。使用了超导磁体实际运行过程中的实验数据计算不同导体结构下雷诺数与摩擦系数的变化关系,利用Katheder经验公式对实验的摩擦系数进行了重新拟合,给出了适用于该导体摩擦系数的经验公式。
[Abstract]:The superconducting magnet outside the 40-T hybrid magnet uses 4.5 K supercritical helium for forced flow cooling. The flow process of forced helium in the cable conductor CICC in the tube will be affected by friction resistance, which will result in a certain pressure drop and heat generation. Meanwhile, the heat generated by the outside will also be taken away by forced helium to keep the magnet in the superconducting temperature region. The relationship between Reynolds number and friction coefficient under different conductor structures is calculated by using the experimental data of superconducting magnets. The experimental friction coefficient is refitted by Katheder empirical formula. An empirical formula for the friction coefficient of the conductor is given.
【作者单位】： 中国科学院强磁场科学中心;中国科学技术大学;
【基金】：国家大科学工程(发改高技[2007]188号)项目
【分类号】：TB66
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本文编号：2020808