An Approach to Thermal Analysis of Helically Corrugated Waveguide Elements of Vacuum Electron Devices
An Approach to Thermal Analysis of Helically Corrugated Waveguide Elements of Vacuum Electron Devices
复制标题
真空电子器件螺旋波纹波导元件的热分析方法
DOI：
10.1109/tmtt.2018.2873362
复制
发表时间：
2018
影响因子：
4.3
通讯作者：
S. Samsonov
中科院分区：
文献类型：
--
作者：
S. Mishakin;S. Samsonov
金属螺旋波纹结构在微波真空电子器件中发挥着重要作用，如波转换器、波压缩器和交互电路。在高功率状态下运行的此类结构的热分析对于其设计和开发非常重要。本文提出了一种有效分析螺旋波纹金属结构中由壁内欧姆损耗引起的温度分布的算法。该算法基于坐标变换以及随后将方程展开为关于纵向坐标的傅里叶级数。讨论了该算法的优点和局限性。与 3-D 有限元模拟进行比较，结果显示出足够好的一致性。
Metallic helically corrugated structures play an important role in microwave vacuum electron devices serving as wave converters, wave compressors, and interaction circuits. Thermal analysis of such structures operating in a high-power regime is important for their design and development. In this paper, an algorithm for an efficient analysis of temperature distribution in helically corrugated metallic structures caused by Ohmic losses in their walls is presented. The algorithm is based on the coordinates transformation with the subsequent expansion of the equations to the Fourier series with respect to the longitudinal coordinate. The advantages and limitations of the algorithm are discussed. Comparison with a 3-D finite-element simulation was performed, and a sufficiently good agreement was demonstrated.