An analytical approach to the unified solution of kinetic equations in rarefied gas dynamics. I. Flow problems

• Autor(a) principal: Scherer, Caio Sarmento
• Data de Publicação: 2009
• Outros Autores: Prolo Filho, João Francisco, Barrichello, Liliane Basso
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da FURG (RI FURG)
• Texto Completo: http://repositorio.furg.br/handle/1/1062
• topic: Rarefied gas dynamics; Boltzmann equation; Kinetic models; Temperature jump; Heat transfer; ADO method

The ADO method, an analytical version of the discrete-ordinates method, is used here to solve a heat-transfer problem in a rarefied gas confined in a channel, as well as to solve a half-space problem in order to evaluate the temperature jump at the wall. This work is an extension of a previous work, devoted to flow problems, where the complete development of the solution, which is analytical in terms of the spatial variable, is presented in a way, such that, a wide class of kinetic models are considered, in an unified approach. A series of numerical results are showed and different simulations are used in order to establish a general comparative analysis based on this consistent set of results provided by the same methodology. In particular, numerical results for heat-flow profile, temperature and density perturbations are obtained for channels (walls), defined by different materials, on which different temperatures are imposed.