... | @@ -20,7 +20,7 @@ We indicate with $`\kappa_p`$ and $`\kappa_r`$ respectively the Planck and t |
... | @@ -20,7 +20,7 @@ We indicate with $`\kappa_p`$ and $`\kappa_r`$ respectively the Planck and t |
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We consider an ideal gas of pressure $`P`$ with equation of state:
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We consider an ideal gas of pressure $`P`$ with equation of state:
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$`P = (\gamma-1)e`$ for a gas with adiabatic index $`\gamma`$.
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$`P = (\gamma-1)e`$ for a gas with adiabatic index $`\gamma`$.
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The terms $`P \nabla \cdot \vec v `$ and $`Q^+= \bar{ \bar \tau}\nabla v`$ are respectively the compressional heating and the viscous heating ( see Mihalas and Mihalas 1984).
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The terms $`P \nabla \cdot \vec v `$ and $`Q^+= \bar{ \bar \tau}\nabla \cdot v`$ are respectively the compressional heating and the viscous heating ( see Mihalas and Mihalas 1984).
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In order to compute the viscous heating the stress tensor is given by:
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In order to compute the viscous heating the stress tensor is given by:
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