Ricerche di Matematica

, Volume 66, Issue 1, pp 221–231 | Cite as

Shock structure and multiple sub-shocks in binary mixtures of Eulerian fluids

  • Fiammetta ConfortoEmail author
  • Andrea Mentrelli
  • Tommaso Ruggeri


The problem of sub-shock formation within a shock structure solution of hyperbolic systems of balance laws is investigated for a binary mixture of multi-temperature Eulerian fluids. The main purpose of this work is the analysis of the ranges of Mach numbers characterizing shock-structure solutions with different features, continuous or not, and to show the existence of ranges, below the maximum unperturbed characteristic velocity, for which each constituent of the mixture may develop a sub-shock within a smooth shock structure profile. The theoretical results are supported by numerical calculations.


Mixtures of Eulerian fluids sub-shock formation Rankine-Hugoniot conditions 



This work has been supported by GNFM/INdAM Young Researchers Project 2014 ‘Subshock formation in gas mixtures’ (PI: F. Conforto); GNFM/INdAM Young Researchers Project 2015 ‘An Eulerian/Lagrangian model for combustion fronts’ (PI: A. Mentrelli) and by University of Bologna FARB 2012 Project ‘Extended Thermodynamics of Non-Equilibrium Processes from Macro- to Nano-Scale’ (PI: T. Ruggeri).


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Copyright information

© Università degli Studi di Napoli "Federico II" 2016

Authors and Affiliations

  • Fiammetta Conforto
    • 1
    Email author
  • Andrea Mentrelli
    • 2
  • Tommaso Ruggeri
    • 2
  1. 1.Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della TerraUniversity of MessinaMessinaItaly
  2. 2.Department of Mathematics and Alma Mater Research Center on Applied Mathematics (AM²)University of BolognaBolognaItaly

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