Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/49882
Título: | Modelling and analysis of time dependent processes in a chemically reactive mixture |
Autor(es): | Ramos, M. P. Machado Ribeiro, Carolina Soares, A. J. |
Palavras-chave: | Chemically reactive flows Sound propagation Flow instabilities Eigenmodes |
Data: | Jan-2018 |
Editora: | Springer Verlag |
Revista: | Continuum Mechanics and Thermodynamics |
Citação: | Ramos, M.P., Ribeiro, C. & Soares, A.J. Modeling and analysis of time-dependent processes in a chemically reactive mixture. Continuum Mech. Thermodyn. 30, 127–144 (2018). https://doi.org/10.1007/s00161-017-0591-9 |
Resumo(s): | In this paper, we study the propagation of sound waves and the dynamics of local wave disturbances induced by spontaneous internal fluctuations in a reactive mixture. We consider a non-diffusive, non-heat conducting and non-viscous mixture described by an Eulerian set of evolution equations. The model is derived from the kinetic theory in a hydrodynamic regime of a fast chemical reaction. The reactive source terms are explicitly computed from the kinetic theory and are built in themodel in a proper way. For both time-dependent problems, we first derive the appropriate dispersion relation, which retains the main effects of the chemical process, and then investigate the influence of the chemical reaction on the properties of interest in the problems studied here. We complete our study by developing a rather detailed analysis using the Hydrogen–Chlorine system as reference. Several numerical computations are included illustrating the behavior of the phase velocity and attenuation coefficient in a low-frequency regime and describing the spectrum of the eigenmodes in the small wavenumber limit. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/49882 |
DOI: | 10.1007/s00161-017-0591-9 |
ISSN: | 0935-1175 |
e-ISSN: | 1432-0959 |
Versão da editora: | https://link.springer.com/article/10.1007%2Fs00161-017-0591-9 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CMAT - Artigos em revistas com arbitragem / Papers in peer review journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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MPR_CR_AJS_Jul28_2017.pdf | 1 MB | Adobe PDF | Ver/Abrir |