The ratio of specific heats for air is assumed to be 1.4.
2.
For a real gas, the ratio of specific heats can wildly oscillate as a function of temperature.
3.
According to ratio of specific heats at constant pressure and at constant volume ( } } ) and is the pressure of the gas.
4.
T is temperature, M is the mach number, P is pressure, ? is density, and ? is the ratio of specific heats.
5.
Where " R " is the ideal gas constant and " ? " is the ratio of specific heats ( approximately 287 J / ( kg�K ) and 1.4 for air respectively ).
6.
Under a perfect gas model, the " ratio of specific heats " ( also called " isentropic exponent ", adiabatic index, " gamma " or " kappa " ) is assumed to be constant along with the gas constant.
7.
The corresponding expression for the ratio of specific heat capacities remains the same since the thermodynamic system size-dependent quantities, whether on a per mass or per mole basis, cancel out in the ratio because specific heat capacities are intensive properties.
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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