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The dynamical behavior of plasmas is strongly dependent on frequency. At the lowest frequency the plasma is in the regime of magnetohydrodynamics (MHD) and has been the focus of extensive research in fluid plasma modeling in the past few decades. At somewhat higher frequencies, the electrons and ions can move relative to each other, behaving like two charge separated, interpenetrating fluids. This...
Many problems of interest in plasma modeling are subject to the ‘tyranny of scales’, specifically, problems that encompass physical processes that operate on timescales that are separated by many orders of magnitude. Investigating such problems therefore requires the use of implicit time-integration schemes, which advance problem solutions on the timescale of interest, while incorporating the physics...
During reentry into the atmosphere, aerospace vehicles are subjected to severe aerothermal heating that causes the surrounding gas to ionize and form a plasma. The analysis of the plasma around the vehicle is useful in developing new strategies and mitigation devices to minimize blackout related issues. Modeling aspects and the simulation results of aerothermal heating, plasma generation and EM wave...
Laboratory modeling was used to analyze the plasma layer generation similar to that produced in real hypersonic flight. This paper illustrates the novel approach utilizing cathodic arc for this purpose.
Summary form only given.Carbon nanotubes is one of the rapid growing fields of study, during the past two decades, due to their superior mechanical, thermophysical, and electrical properties. Nanotubes are synthesized using three major techniques: arc discharge ablation, laser ablation, and chemical vapor deposition. Out of these, arc discharge ablation is cheaper, easier and produces nanotubes with...
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