Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Giampiero Spiga"'
Autor:
Giampiero Spiga, Marzia Bisi
Publikováno v:
Ricerche di Matematica. 68:1-12
Starting from a two-velocity version of a recently derived six-moment closure of the kinetic Boltzmann description of a polyatomic gas, based on a discrete structure of internal energy levels, the classical shock wave problem is analyzed in some deta
Publikováno v:
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A mathematical model, based on a mesoscopic approach, describing the competition between tumor cells and immune system in terms of kinetic integro-differential equations is presented. Four interacting populations are considered, representing, respect
Dynamical pressure in a polyatomic gas: Interplay between kinetic theory and extended thermodynamics
Publikováno v:
Kinetic & Related Models. 11:71-95
The aim of this paper is to compare different kinetic approaches to a polyatomic rarefied gas: the kinetic approach via a continuous energy parameter $I$ and the mixture-like one, based on discrete internal energy. We prove that if we consider only $
Publikováno v:
Kinetic & Related Models. 11:1377-1393
We propose a kinetic model of BGK type for a gas mixture of an arbitrary number of species with arbitrary collision law. The model features the same structure of the corresponding Boltzmann equations and fulfils all consistency requirements concernin
Autor:
Marzia Bisi, Giampiero Spiga
Publikováno v:
Communications in Applied and Industrial Mathematics, Vol 8, Iss 1, Pp 23-42 (2017)
Starting from a kinetic BGK-model for a rarefied polyatomic gas, based on a molecular structure of discrete internal energy levels, an asymptotic Chapman-Enskog procedure is developed in the asymptotic continuum limit in order to derive consistent fl
Publikováno v:
31ST INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD31.
We derive hydrodynamic equations from a consistent BGK model for inert mixtures, which preserves the structure of the original Boltzmann equations, with a sum of binary collision operators in each kinetic equation. A suitable Chapman–Enskog method
Autor:
Giampiero Spiga, Marzia Bisi
Publikováno v:
Ricerche di Matematica. 66:113-124
Starting from a kinetic Boltzmann or BGK description of a polyatomic gas, on the basis of a discrete structure of internal energy levels, an asymptotic Chapman–Enskog analysis is performed in the continuum limit in order to achieve consistent fluid
Autor:
Marzia Bisi, Giampiero Spiga
Publikováno v:
Springer Proceedings in Mathematics & Statistics ISBN: 9783319996882
We perform an hydrodynamic limit of BGK equations for an inert mixture of polyatomic gases, with molecular structure modelled by a set of discrete internal energy levels. An asymptotic Chapman–Enskog procedure provides consistent hydrodynamic equat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::927e07246018f0bfeb434ae9033a86f7
https://doi.org/10.1007/978-3-319-99689-9_1
https://doi.org/10.1007/978-3-319-99689-9_1
Publikováno v:
Acta Applicandae Mathematicae. 132:95-105
A multi-temperature hydrodynamic limit of kinetic equations is employed for the analysis of the steady shock problem in a binary mixture. Numerical results for varying parameters indicate possible occurrence of either smooth profiles or of weak solut
Publikováno v:
Computers & Mathematics with Applications. 66:1403-1417
Starting from a simple kinetic model for a chemical reaction, multi-temperature reactive Euler equations are derived for physical regimes in which evolution is driven by elastic collisions within the same species and mechanical relaxation is faster t