Isentropic Flow

Definition

Isentropic Flow is a flow that is both adiabatic (no heat transfer) and reversible (no entropy generation). In this regime, entropy remains constant along streamlines.

Key Relations (Ideal Gas)

$\frac{p_0}{p} = \left(1 + \frac{\gamma-1}{2}M^2\right)^{\gamma/(\gamma-1)}$ $\frac{T_0}{T} = 1 + \frac{\gamma-1}{2}M^2$

Relationships

• Related: Entropy, Mach Number