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The 19 pages that link to Compressible flow, each with the reason it gives.

• AerodynamicsRelated: High-speed aerodynamics must account for substantial density variations.

• Continuity equationRelated: Density variation makes the full mass-conservation equation necessary.

• Mach numberRelated: Compressibility becomes increasingly important as flow speed approaches the local sound speed.

• Euler equationsRelated: Compressible Euler equations allow density to vary with the motion.

• Jet propulsionRelated: High-speed gas turbines and rocket nozzles operate with substantial density changes.

• Mass flow rateRelated: Density variation makes local mass flow differ from volume flow in a changing way.

• Pitot tubeRelated: At high aircraft speeds, density changes require a compressible-flow correction.

• Pipe flowRelated: Gas flow in pipes may require accounting for density variation with pressure.

• Crocco's theoremRelated: Entropy and stagnation enthalpy gradients are especially consequential in compressible applications.