Dynamics And Thermodynamics Of Compressible...: The

Constrains the direction of flow processes, dictating that entropy must remain constant (isentropic) or increase (as seen across shock waves). Thermodynamics and the Speed of Sound

Describes the forces acting on the fluid, where pressure gradients and viscous effects dictate acceleration. The Dynamics and Thermodynamics of Compressible...

The defining parameter of compressible flow is the Mach number ( ). The speed of sound ( Constrains the direction of flow processes, dictating that

) is a thermodynamic property, defined as the square root of the partial derivative of pressure with respect to density at constant entropy ( In ( Constrains the direction of flow processes