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Specifically it is achieved at:
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| LaTeX Math Inline |
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| body | S \rightarrow \rm max |
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| | LaTeX Math Inline |
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| body | A(T, V) \rightarrow \rm min |
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| | LaTeX Math Inline |
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| body | G(p, T) \rightarrow \rm min |
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| for isolated system | for a system with | LaTeX Math Inline |
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| body | T = {\rm const} , \ V = {\rm const} |
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| for a system with | LaTeX Math Inline |
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| body | p = {\rm const} , \ T = {\rm const} |
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Particularly in Fluid Dynamics it means that:
| LaTeX Math Block |
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| G \rightarrow \rm min \ \Leftrightarrow \mathrm{d}G = 0 |
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The Gibbs free energy is at minimum |
| LaTeX Math Block |
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| T= \rm const |
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the fluid temperature is constant at any moment of time and spatial location of a fluid flow |
| LaTeX Math Block |
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| p=\rm const |
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the fluid pressure is constant at any moment of time and spatial location of a fluid flow |
| LaTeX Math Block |
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| \rho = \rho(p, T)=\rm const |
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fluid density is a function of pressure and temperature only |
| LaTeX Math Block |
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| \mu = \mu(p, T)=\rm const |
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fluid viscosity is a function of pressure and temperature only |
| LaTeX Math Block |
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| \lambda = \lambda(p, T)=\rm const |
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fluid thermal conductivity is a function of pressure and temperature only |
| LaTeX Math Block |
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| c_p = c_p(p, T)=\rm const |
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fluid isobaric specific heat capacity is a function of pressure and temperature only |
| LaTeX Math Block |
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| \alpha = \alpha(p, T)=\rm const |
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fluid Joule–Thomson coefficient is a function of pressure and temperature only |
See also
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Natural Science / Physics / Thermodynamics / Thermodynamic system
[ Vapour Liquid Equilibrium (VLE) ]
