# Specific Heat Ratio

Written by Jerry Ratzlaff on . Posted in Thermodynamics

## Specific Heat Ratio

Specific heat ratio ( $$\gamma$$ ) (dimensionless number) (also called heat capacity ratio, adiabatic index, isentropic expansion factor) is the ratio of two specific heats or the ratio of the heat capacity at constant pressure to heat capacity at constant volume.

### Specific Heat Ratio Formula

$$\large{ \gamma = \frac {C_p } {C_v} }$$

Where:

$$\large{ \gamma }$$   (Greek symbol gamma) or $$\kappa$$   (Greek symbol kappa) = specific heat ratio

$$\large{ C_p }$$ = specific heat constant pressure

$$\large{ C_v }$$ = specific heat constant volume

Tags: Equations for Heat