Bulk modulus under isentropic (constant entropy S = \rm const) compression/decompression thermodynamic process:
| (1) | K_S = \rho \cdot \left( \frac{\partial p}{\partial \rho} \right)_S |
Isentropic bulk modulus is material property and is inverse to Isentropic Compressibility \beta_S:
| (2) | K_S = \frac{1}{\beta_S} |
See also
Physics / Mechanics / Continuum mechanics / Continuum body / Bulk modulus