polyatomic gas
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scholarly journals A Note on the Steady Navier–Stokes Equations Derived from an ES–BGK Model for a Polyatomic Gas

Fluids ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 32
Author(s):  
Kazuo Aoki ◽  
Marzia Bisi ◽  
Maria Groppi ◽  
Shingo Kosuge
Keyword(s):  
Shock Wave ◽  
Stokes Equations ◽  
Qualitative Theory ◽  
Navier Stokes ◽  
Hydrodynamic Equations ◽  
Bgk Model ◽  
Navier Stokes Equations ◽  
Polyatomic Gas ◽  
Shock Wave Solution ◽  
Two Temperature

The two-temperature Navier–Stokes equations derived from an ellipsoidal Bhatnagar-Gross-Krook (ES-BGK) model for a polyatomic gas (Phys. Rev. E102, 023104 (2020)) are considered in regimes where bulk viscosity is much greater than the shear viscosity. Possible existence of a shock-wave solution for the steady version of these hydrodynamic equations is investigated resorting to the qualitative theory of dynamical systems. Stability properties of upstream and downstream equilibria are discussed for varying parameters.

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