发电技术2025，Vol.46Issue(5)：959-967,9.DOI:10.12096/j.2096-4528.pgt.24007
轴向外磁场对盘式磁流体发电机性能特性的影响研究
Research on the Influence of Axial Applied Magnetic Field on the Performance Characteristics of Disk Magnetohydrodynamic Generator
摘要
Abstract
[Objectives]Disk magnetohydrodynamic(MHD)generators hold broad development prospects in clean energy generation and space power supply.The axial applied magnetic field is one of the important operating parameters of the disk MHD generator.To deeply study the influence of the axial external magnetic field on the performance of the disk-type magnetohydrodynamic generator,a physical model of the disk generator is proposed.[Methods]In this paper,a full flow channel physical model including the inlet,power generation channel,and exhaust channel of the disk MHD generator is established.The influence of the axial applied magnetic field on the flow characteristics,ionization characteristics,and power generation process of the disk MHD generator is analyzed through numerical simulation of the r-z quasi 2-D MHD model.[Results]Under the 5 T magnetic field,the disk MHD generator achieves high enthalpy extraction ratio and high isentropic efficiency due to the generation of a higher level of Faraday current and plasma stability.[Conclusions]Through numerical simulation,the performance of the disk MHD generator under different axial magnetic fields is analyzed more accurately.This numerical simulation method is of great significance for improving the operational control accuracy and power generation efficiency of the disk MHD generator under optimal performance conditions.关键词
盘式磁流体发电机/轴向外磁场/非平衡等离子体/发电机性能/全流道物理模型/法拉第电流/流动和电离特性/三次插值伪粒子方法Key words
disk magnetohydrodynamic(MHD)generator/axial applied magnetic field/non-equilibrium plasma/generator performance/full flow channel physical model/Faraday current/flow and ionization characteristics/cubic interpolation pseudo-particle method分类
能源科技引用本文复制引用
朱培奇,彭爱武..轴向外磁场对盘式磁流体发电机性能特性的影响研究[J].发电技术,2025,46(5):959-967,9.基金项目
国家自然科学基金项目(52076214). Project Supported by National Natural Science Foundation of China(52076214). （52076214）
