Artículo
Abstract:
A single, nonlocal expression for the electron heat flux, which closely reproduces known results at high and low ion charge number Z, and "exact" results for the local limit at all Z, is derived by solving the kinetic equation in a narrow, tail-energy range. The solution involves asymptotic expansions of Bessel functions of large argument, and (Z-dependent) order above or below it, corresponding to the possible parabolic or hyperbolic character of the kinetic equation; velocity space diffusion in self-scattering is treated similarly to isotropic thermalization of tail energies in large Z analyses. The scale length H characterizing nonlocal effects varies with Z, suggesting an equal dependence of any ad hoc flux limiter. The model is valid for all H above the mean-free path for thermal electrons. © 1992 American Institute of Physics.
Registro:
| Documento: | Artículo |
| Título: | Self-consistent, nonlocal electron heat flux at arbitrary ion charge number |
| Autor: | Sanmartín, J.R.; Ramírez, J.; Fernández-Feria, R.; Minotti, F. |
| Filiación: | E.T.S.I. Aeronáuticos, Universidad Politécnica, 28040 Madrid, Spain E.T.S.I. Industriales, Universidad de Sevilla, 41012 Sevilla, Spain Laboratorio de Fisica del Plasma, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina |
| Año: | 1992 |
| Volumen: | 4 |
| Número: | 11 |
| Página de inicio: | 3579 |
| Página de fin: | 3585 |
| DOI: | http://dx.doi.org/10.1063/1.860366 |
| Título revista: | Physics of Fluids B |
| ISSN: | 08998221 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08998221_v4_n11_p3579_Sanmartin |
Citas:
---------- APA ----------
Sanmartín, J.R., Ramírez, J., Fernández-Feria, R. & Minotti, F. (1992) . Self-consistent, nonlocal electron heat flux at arbitrary ion charge number. Physics of Fluids B, 4(11), 3579-3585.http://dx.doi.org/10.1063/1.860366
---------- CHICAGO ----------
Sanmartín, J.R., Ramírez, J., Fernández-Feria, R., Minotti, F. "Self-consistent, nonlocal electron heat flux at arbitrary ion charge number" . Physics of Fluids B 4, no. 11 (1992) : 3579-3585.http://dx.doi.org/10.1063/1.860366
---------- MLA ----------
Sanmartín, J.R., Ramírez, J., Fernández-Feria, R., Minotti, F. "Self-consistent, nonlocal electron heat flux at arbitrary ion charge number" . Physics of Fluids B, vol. 4, no. 11, 1992, pp. 3579-3585.http://dx.doi.org/10.1063/1.860366
---------- VANCOUVER ----------
Sanmartín, J.R., Ramírez, J., Fernández-Feria, R., Minotti, F. Self-consistent, nonlocal electron heat flux at arbitrary ion charge number. 1992;4(11):3579-3585.http://dx.doi.org/10.1063/1.860366
