The Prandtl-Meyer function, often denoted as , is a mathematical function used in the study of compressible fluid dynamics, particularly for analyzing the expansion of a flow over a wedge or a curved surface. The function describes the angular deviation of the flow caused by a Mach wave (a type of compression wave) in supersonic flows.
- Specific heat ratio (γ)
- Mach number (M)
- Prandtl-Meyer function (ν(M))