NUMERICAL SIMULATION OF PLASMA JET GENERATION USING CONICAL MULTI-WIRE ARRAY
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更新:2024-04-22 01:01:05 浏览:148次
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摘要
The results of scaling calculations of plasma jet parameters are provided. The jet is generated in the axial direction as a result of a radial implosion of a conical array made of aluminum wires. The array is powered by a current pulse of 2 MA amplitude and 1 µs rise-time. Numerical studies were performed using 3D RMHD code FLUX-3D. A generalized model [B.G.Repin,
A .P.Orlov. Phys .Plasmas 29, 052713 (2022)] of plasma formation in multi-wire Z-pinches was used at the numerical simulation of prolonged substance ablation of current carrying wires. The conical array parameters affect as the process of ablation and the final plasma implosion which determine magneto-hydrodynamic characteristics of pre-axis jet (density, axial and angular velocities, temperature, a magnetization parameter).
An opening angle of the conical array, a diameter of an axial exit hole in a disk electrode, and a value of an external longitudinal magnetic field were varied in a series of scaling calculations.
The performed calculation research can be useful for low-scale experimental simulations of astrophysical phenomena, such as observed outflows from star objects, with use of multi-wire Z-pinches on the pulsed power facilities.
关键词
Conical multi-wire array,axial jet,3D RMHD simulation
稿件作者
Andrey Orlov
Russian Federal Nuclear Center - All-Russian Research Institute of Experimental Physics (RFNC-VNIIEF)
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