Numerical study of the first compression of a two-dimensional pinch

For studying the first compression phase of a Plasma Focus machine, we developed a 2-fluid, time-dependent, 2-D code. The code includes two species (ions and electrons), two temperatures, radiation, thermal conductivity, electrical conductivity, magnetic diffusion, and viscosity and is coupled to an...

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Detalles Bibliográficos
Autores principales: Bilbao, Luis Ernesto, Grondona, Diana Elena
Publicado: 1997
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v256_n1-2_p451_Bilbao
http://hdl.handle.net/20.500.12110/paper_0004640X_v256_n1-2_p451_Bilbao
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0004640X_v256_n1-2_p451_Bilbao
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spelling paper:paper_0004640X_v256_n1-2_p451_Bilbao2023-06-08T14:29:27Z Numerical study of the first compression of a two-dimensional pinch Bilbao, Luis Ernesto Grondona, Diana Elena For studying the first compression phase of a Plasma Focus machine, we developed a 2-fluid, time-dependent, 2-D code. The code includes two species (ions and electrons), two temperatures, radiation, thermal conductivity, electrical conductivity, magnetic diffusion, and viscosity and is coupled to an external circuit. In order to get reasonable initial conditions for the pinch phase, a simple 1-D model is used for the run-down phase. Under this somewhat ideal Plasma Focus discharge condition, relatively simple scaling laws are obtained. In particular, for a given machine, the pressure (po) of maximum thermonuclear production scales with the charging voltage (V0) as po ∝ V20; the thermonuclear production (Yn) at these pressures increases with the current (I0) as Yn ∝ I4 0 and the mean energy per particle is almost independent of all parameters (note that this means that the converging speed should be almost the same regardless of the machine at the optimum conditions). These laws show a reasonable agreement with experimental data and can be explained with a dimensional analysis. Fil:Bilbao, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Grondona, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v256_n1-2_p451_Bilbao http://hdl.handle.net/20.500.12110/paper_0004640X_v256_n1-2_p451_Bilbao
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description For studying the first compression phase of a Plasma Focus machine, we developed a 2-fluid, time-dependent, 2-D code. The code includes two species (ions and electrons), two temperatures, radiation, thermal conductivity, electrical conductivity, magnetic diffusion, and viscosity and is coupled to an external circuit. In order to get reasonable initial conditions for the pinch phase, a simple 1-D model is used for the run-down phase. Under this somewhat ideal Plasma Focus discharge condition, relatively simple scaling laws are obtained. In particular, for a given machine, the pressure (po) of maximum thermonuclear production scales with the charging voltage (V0) as po ∝ V20; the thermonuclear production (Yn) at these pressures increases with the current (I0) as Yn ∝ I4 0 and the mean energy per particle is almost independent of all parameters (note that this means that the converging speed should be almost the same regardless of the machine at the optimum conditions). These laws show a reasonable agreement with experimental data and can be explained with a dimensional analysis.
author Bilbao, Luis Ernesto
Grondona, Diana Elena
spellingShingle Bilbao, Luis Ernesto
Grondona, Diana Elena
Numerical study of the first compression of a two-dimensional pinch
author_facet Bilbao, Luis Ernesto
Grondona, Diana Elena
author_sort Bilbao, Luis Ernesto
title Numerical study of the first compression of a two-dimensional pinch
title_short Numerical study of the first compression of a two-dimensional pinch
title_full Numerical study of the first compression of a two-dimensional pinch
title_fullStr Numerical study of the first compression of a two-dimensional pinch
title_full_unstemmed Numerical study of the first compression of a two-dimensional pinch
title_sort numerical study of the first compression of a two-dimensional pinch
publishDate 1997
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v256_n1-2_p451_Bilbao
http://hdl.handle.net/20.500.12110/paper_0004640X_v256_n1-2_p451_Bilbao
work_keys_str_mv AT bilbaoluisernesto numericalstudyofthefirstcompressionofatwodimensionalpinch
AT grondonadianaelena numericalstudyofthefirstcompressionofatwodimensionalpinch
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