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  2. Compressible flow - Wikipedia

    en.wikipedia.org/wiki/Compressible_flow

    Compressible flow (or gas dynamics) is the branch of fluid mechanics that deals with flows having significant changes in fluid density.While all flows are compressible, flows are usually treated as being incompressible when the Mach number (the ratio of the speed of the flow to the speed of sound) is smaller than 0.3 (since the density change due to velocity is about 5% in that case). [1]

  3. Compressibility - Wikipedia

    en.wikipedia.org/wiki/Compressibility

    In thermodynamics and fluid mechanics, the compressibility (also known as the coefficient of compressibility [1] or, if the temperature is held constant, the isothermal compressibility [2]) is a measure of the instantaneous relative volume change of a fluid or solid as a response to a pressure (or mean stress) change.

  4. Compressed fluid - Wikipedia

    en.wikipedia.org/wiki/Compressed_fluid

    The compressed fluid region is located to the left of the blue line (the liquid-vapor phase boundary). The international pictogram for compressed gases. A compressed fluid (also called a compressed or unsaturated liquid, [1] subcooled fluid or liquid) is a fluid under mechanical or thermodynamic conditions that force it to be a liquid. [2]

  5. Fluid - Wikipedia

    en.wikipedia.org/wiki/Fluid

    Fluids may be classified by their compressibility: Compressible fluid: A fluid that causes volume reduction or density change when pressure is applied to the fluid or when the fluid becomes supersonic. Incompressible fluid: A fluid that does not vary in volume with changes in pressure or flow velocity (i.e., ρ=constant) such as water or oil.

  6. Fluid dynamics - Wikipedia

    en.wikipedia.org/wiki/Fluid_dynamics

    In physics, physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids – liquids and gases. It has several subdisciplines, including aerodynamics (the study of air and other gases in motion) and hydrodynamics (the study of water and other liquids in motion).

  7. Euler equations (fluid dynamics) - Wikipedia

    en.wikipedia.org/wiki/Euler_equations_(fluid...

    For constant fluid density, the incompressible equations can be written as a quasilinear advection equation for the fluid velocity together with an elliptic Poisson's equation for the pressure. On the other hand, the compressible Euler equations form a quasilinear hyperbolic system of conservation equations.

  8. Choked flow - Wikipedia

    en.wikipedia.org/wiki/Choked_flow

    The parameter that becomes "choked" or "limited" is the fluid velocity. Choked flow is a fluid dynamic condition associated with the Venturi effect . When a flowing fluid at a given pressure and temperature passes through a constriction (such as the throat of a convergent-divergent nozzle or a valve in a pipe ) into a lower pressure environment ...

  9. Non ideal compressible fluid dynamics - Wikipedia

    en.wikipedia.org/wiki/Non_ideal_compressible...

    The fluid is siloxane MM (hexamethyldisiloxane, ) evolving in the non-ideal gasdynamic regime. Non ideal compressible fluid dynamics (NICFD), or non ideal gas dynamics, is a branch of fluid mechanics studying the dynamic behavior of fluids not obeying ideal-gas thermodynamics.