{"title":"Supersonic Flow past a Sharp Plate with Surface Anomalous Glow Discharge in a Magnetic Field","authors":"S. T. Surzhikov","doi":"10.1134/s0015462823601985","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The electrodynamic structure of an anomalous glow discharge between two plane electrodes located on the surface of a sharp plate in supersonic flow of molecular nitrogen is studied numerically in a wide range of Mach numbers using a modified ambipolar model of quasi-neutral electric-discharge plasma. The ambipolar diffusion coefficient and the effective ionization rate are modified while taking into account the external magnetic field. The problem is solved in the two-dimensional <i>x–y</i> formulation, when the external magnetic field strength is directed in the positive or negative direction of the <i>z</i> axis. The parameters of anomalous glow discharge are numerically studied in the pressure range <i>p</i> = 0.14–5 Torr and the voltage drops on the quasineutral current column of discharge plasma <i>V</i> = 30–320 V. The main problem parameters which make it possible to obtain a reasonable agreement with the available experimental data are determined.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fluid Dynamics","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1134/s0015462823601985","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MECHANICS","Score":null,"Total":0}
引用次数: 0
Abstract
The electrodynamic structure of an anomalous glow discharge between two plane electrodes located on the surface of a sharp plate in supersonic flow of molecular nitrogen is studied numerically in a wide range of Mach numbers using a modified ambipolar model of quasi-neutral electric-discharge plasma. The ambipolar diffusion coefficient and the effective ionization rate are modified while taking into account the external magnetic field. The problem is solved in the two-dimensional x–y formulation, when the external magnetic field strength is directed in the positive or negative direction of the z axis. The parameters of anomalous glow discharge are numerically studied in the pressure range p = 0.14–5 Torr and the voltage drops on the quasineutral current column of discharge plasma V = 30–320 V. The main problem parameters which make it possible to obtain a reasonable agreement with the available experimental data are determined.
摘要 利用改进的准中性放电等离子体的伏极模型，对分子氮超音速流中位于尖板表面的两个平面电极之间的异常辉光放电的电动力学结构进行了数值研究。在考虑到外部磁场的情况下，修改了伏极扩散系数和有效电离率。当外部磁场强度指向 z 轴的正方向或负方向时，问题以二维 x-y 形式求解。对压力范围 p = 0.14-5 托和放电等离子体准中性电流柱上的电压降 V = 30-320 V 的反常辉光放电参数进行了数值研究。
期刊介绍：
Fluid Dynamics is an international peer reviewed journal that publishes theoretical, computational, and experimental research on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media. Special attention is given to new trends developing at the leading edge of science, such as theory and application of multi-phase flows, chemically reactive flows, liquid and gas flows in electromagnetic fields, new hydrodynamical methods of increasing oil output, new approaches to the description of turbulent flows, etc.
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