Hydrodynamics

Encyclopedia : H : HY : HYD : Hydrodynamics

Hydrodynamics simulation of the Rayleigh-Taylor instability Shengtai Li, Hui Li "Parallel AMR Code for Compressible MHD or HD Equations" (Los Alamos National Laboratory) [link]

Hydrodynamics (literally, "water motion") is fluid dynamics applied to liquids, such as water, alcohol, oil, and blood. (However, this distinction from fluid dynamics as a whole is not always fully observed).

Blaise Pascal in the 1600s contributed some of the initial theory to this field. The term originates from the work of Daniel Bernoulli, based on the title of his work called Hydrodynamica (1738). He and Leonhard Euler established the general equations of hydrodynamics.

The practice was continued by Joseph Louis Lagrange (1736-1813) with the Euler-Lagrange system, Jean le Rond d'Alembert (1717-1783) discovered the Cauchy-Riemann equations, Pierre Simon Laplace (1749-1827) with the governing equation in the potential flow named after him, Hermann Ludwig Ferdinand von Helmholtz (1821-1894) and William Thomson, Lord Kelvin (1824-1907) with Kelvin-Helmholtz instability (see also Rayleigh-Taylor and Richtmyer-Meshkov) and Helmholtz's work on vortices.

An analogous field of study, the dynamics of electrically conducting fluids in magnetic fields is called magnetohydrodynamics.

Footnotes

See also

• fluid dynamics
• dissolution rate
• convective diffusion theory
• Reynolds number
• boundary layer
• Ludwig Prandtl,
• Benjamin Levich
• Osborne Reynolds
• Magnetohydrodynamics
• Poiseuille's law
• potential flow
• plume (hydrodynamics)
• entrainment (hydrodynamics)

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