Enhanced Joule heat release at surface irregularities

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2024-10-02 DOI:10.1016/j.cap.2024.09.013

G.Sh. Boltachev, P.A. Russkikh, S.A. Chaikovsky

引用次数: 0

Abstract

The heat release that occurs in a cylindrical conductor carrying an alternating current is analyzed for the cases when the conductor has axisymmetric surface irregularities of one of three types: local bumps, local pits, and sequences of alternating bumps and pits (wavy irregularities). The magnetic field and current density distributions over the conductor cross section have been simulated. The simulation parameters were chosen to match the conditions of experiments on the generation of strong magnetic fields. However, due to the analysis of the initial heating stage, the problem is solved neglecting the temperature dependence of the resistivity of the material. A multiple increase in heat release power in the vicinity of a surface irregularity has been revealed for the three types of irregularities.

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表面不规则处焦耳热释放增强

针对导体轴对称表面存在以下三种不规则情况之一的情况，分析了携带交流电的圆柱形导体中发生的热释放：局部凸起、局部凹坑以及凸起和凹坑交替序列（波浪形不规则）。对导体横截面上的磁场和电流密度分布进行了模拟。模拟参数的选择符合强磁场产生实验的条件。然而，由于要对初始加热阶段进行分析，因此在解决问题时忽略了材料电阻率的温度依赖性。三种不规则表面的热释放功率在不规则表面附近呈倍数增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.