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  2. Kelvin–Helmholtz instability - Wikipedia

    en.wikipedia.org/wiki/KelvinHelmholtz_instability

    A KH instability rendered visible by clouds, known as fluctus, [2] over Mount Duval in Australia A KH instability on the planet Saturn, formed at the interaction of two bands of the planet's atmosphere Kelvin-Helmholtz billows 500m deep in the Atlantic Ocean Animation of the KH instability, using a second order 2D finite volume scheme

  3. Hydrodynamic stability - Wikipedia

    en.wikipedia.org/wiki/Hydrodynamic_stability

    This is an image, captured in San Francisco, which shows the "ocean wave" like pattern associated with the KelvinHelmholtz instability forming in clouds. The KelvinHelmholtz instability (KHI) is an application of hydrodynamic stability that can be seen in nature. It occurs when there are two fluids flowing at different velocities.

  4. What are Kelvin-Helmholtz clouds? Rare formation spotted over ...

    www.aol.com/news/kelvin-helmholtz-clouds-rare...

    A curious cloud seen over Smith Mountain looks more like something out of a fairytale than it does real life — and the science behind it is fascinating. What are Kelvin-Helmholtz clouds?

  5. Lee wave - Wikipedia

    en.wikipedia.org/wiki/Lee_wave

    KelvinHelmholtz instability can occur when velocity shear is present within a continuous fluid or when there is sufficient velocity difference across the interface between two fluids. Rossby waves (or planetary waves) are large-scale motions in the atmosphere whose restoring force is the variation in Coriolis effect with latitude.

  6. Rayleigh–Taylor instability - Wikipedia

    en.wikipedia.org/wiki/Rayleigh–Taylor_instability

    Hydrodynamics simulation of a single "finger" of the Rayleigh–Taylor instability. [1] Note the formation of KelvinHelmholtz instabilities, in the second and later snapshots shown (starting initially around the level =), as well as the formation of a "mushroom cap" at a later stage in the third and fourth frame in the sequence.

  7. Kelvin–Helmholtz mechanism - Wikipedia

    en.wikipedia.org/wiki/KelvinHelmholtz_mechanism

    The KelvinHelmholtz mechanism is an astronomical process that occurs when the surface of a star or a planet cools. The cooling causes the internal pressure to drop, and the star or planet shrinks as a result. This compression, in turn, heats the core of the star/planet.

  8. Taylor–Goldstein equation - Wikipedia

    en.wikipedia.org/wiki/Taylor–Goldstein_equation

    It describes the dynamics of the KelvinHelmholtz instability, subject to buoyancy forces (e.g. gravity), for stably stratified fluids in the dissipation-less limit. Or, more generally, the dynamics of internal waves in the presence of a (continuous) density stratification and shear flow.

  9. D'Alembert's paradox - Wikipedia

    en.wikipedia.org/wiki/D'Alembert's_paradox

    Jean le Rond d'Alembert (1717-1783) From experiments it is known that there is always – except in case of superfluidity – a drag force for a body placed in a steady fluid onflow. The figure shows the drag coefficient C d for a sphere as a function of Reynolds number Re, as obtained from laboratory experiments. The dark line is for a sphere ...