The SI unit of specific internal energy is J / kg.
2.
Where " u " 1 and " u " 2 denote the specific internal energies of the gas in regions 1 and 2, respectively.
3.
Thus "'for an incompressible inviscid fluid the specific internal energy is constant along the flow lines "', also in a time-dependent flow.
4.
Sometimes it is convenient to use a corresponding density called " specific internal energy " which is internal energy per unit of mass ( kilogram ) of the system in question.
5.
If the specific internal energy is expressed relative to units of amount of substance ( mol ), then it is referred to as " molar internal energy " and the unit is J / mol.
6.
On the other hand, the two second-order partial derivatives of the specific internal energy in the momentum equation require the specification of the fundamental equation of state of the material considered, i . e . of the specific internal energy as function of the two variables specific volume and specific entropy:
7.
On the other hand, the two second-order partial derivatives of the specific internal energy in the momentum equation require the specification of the fundamental equation of state of the material considered, i . e . of the specific internal energy as function of the two variables specific volume and specific entropy:
8.
Where \ rho is the density, \ gamma = C _ p / C _ v is the adiabatic index ( ratio of specific heats ), e = C _ vT is the internal energy per unit mass ( the " specific internal energy " ), C _ v is the specific heat at constant volume, and C _ p is the specific heat at constant pressure.
9.
Where \ rho is the density, \ gamma = C _ p / C _ v is the adiabatic index ( ratio of specific heats ), U = C _ vT is the internal energy per unit mass ( the " specific internal energy " ), C _ v is the specific heat at constant volume, and C _ p is the specific heat at constant pressure.
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