标题：
Performance investigation of plasma magnetohydrodynamic power generator
点击次数：
所属单位：
航天学院
发表刊物：
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
关键字：
magnetohydrodynamic (MHD) power generator Faraday type generator channel ionization load factor magnetic field
摘要：
magnetohydrodynamic (MHD) power generator system involves several subjects such as magnetohydrodynamics, plasma physics, material science, and structure mechanics. Therefore, the performance of the MHD power generator is affected by many factors, among which the load coefficient k is of great importance. This paper reveals the effect of some system parameters on the performance by three-dimensional (3D) numerical simulation for a Faraday type MHD power generator using He/Xe as working plasma. The results show that average electrical conductivity increases first and then decreases with the addition of magnetic field intensity. Electrical conductivity reaches the maximum value of 11.05 S/m, while the applied magnetic field strength is B = 1.75 T. When B > 3T, the ionization rate along the midline well keeps stable, which indicates that the ionization rate and three-body recombination rate (three kinds of particles combining to two kinds of particles) are approximately equal, and the relatively stable plasma structure of the mainstream is preserved. Efficiency of power generation of the Faraday type channel increases with an increment of the load factor. However, enthalpy extraction first increases to a certain value, and then decreases with the load factor. The enthalpy extraction rate reaches the maximum when the load coefficient k equals 0.625, which is the best performance of the power generator channel with the maximum electricity production.
ISSN号：
0253-4827
是否译文：
否
发表时间：
2018-03-01
合写作者：
李林永,Li, Linyong,朱桂平,李来,Li, Lai
通讯作者：
黄护林
发表时间：
2018-03-01
学位：工学博士学位
职称：教授
所在单位：航天学院