Far wake structure in rarefied plasma flows past charged bodies

Sanmartín Losada, Juan Ramón y Lam, S.H. (1971). Far wake structure in rarefied plasma flows past charged bodies. "Physics of Fluids", v. 14 ; pp. 62-71. ISSN 0031-9171.

Descripción

Título: Far wake structure in rarefied plasma flows past charged bodies
Autor/es:
  • Sanmartín Losada, Juan Ramón
  • Lam, S.H.
Tipo de Documento: Artículo
Título de Revista/Publicación: Physics of Fluids
Fecha: 1971
Volumen: 14
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The asymptotic structure of the far-wake behind a charged body in a rarefied plasma flow is investigated under the assumption of small ion-to-electron temperature ratio and of flow speed hypersonic with respect to the ions but not with respect to the electrons. It is found that waves are excited even if the flow is subacoustic (flow velocity less than the ion-acoustic speed). For both superacoustic and subacoustic velocities a steep wave front develops separating the weakly perturbed, quasineutral plasma ahead, from the region behind where ion waves appear. Near the axis a trailing front develops;the region between this and the axis is quasineutral for superacoustic speeds. The decay laws in all of these regions, the self-similar structure of the fronts and the general character of the waves are determined.The damping of the waves and special flow detail for bodies large and small compared with the Debye length are discussed. A nonlinear analysis of the leading wave front in superacoustic flow is carried out. A hyperacoustic equivalence principle is presented.

Más información

ID de Registro: 21309
Identificador DC: http://oa.upm.es/21309/
Identificador OAI: oai:oa.upm.es:21309
Depositado por: Biblioteca ETSI Aeronauticos
Depositado el: 10 Oct 2013 12:28
Ultima Modificación: 24 Oct 2016 07:55
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