Editing Instability (section)

==Fluid instabilities==
[[File:HD-Rayleigh-Taylor.gif|thumb|[[Hydrodynamic]]s simulation of the [[Rayleigh–Taylor instability]]<ref>{{cite web |author=Shengtai Li |author2=Hui Li |title=Parallel AMR Code for Compressible MHD or HD Equations |publisher=Los Alamos National Laboratory |url=http://math.lanl.gov/Research/Highlights/amrmhd.shtml |access-date=2006-05-31 |archive-url=https://web.archive.org/web/20160303182548/http://math.lanl.gov/Research/Highlights/amrmhd.shtml |archive-date=2016-03-03  }}</ref> ]]
[[File:Fluid Instability.jpg|thumb|Unstable flow structure generated from the collision of two impinging jets.]]

[[Fluid]] instabilities occur in [[liquids]], [[gases]] and [[Plasma physics|plasmas]], and are often characterized by the shape that form; they are studied in [[fluid dynamics]] and [[magnetohydrodynamics]]. Fluid instabilities include:

* [[Ballooning instability]] (some analogy to the Rayleigh–Taylor instability); found in the [[magnetosphere]]
* [[Atmospheric instability]]
** [[Hydrodynamic instability]] or [[dynamic instability]] ([[atmospheric dynamics]])
*** [[Inertial instability]]; [[baroclinic instability]]; [[symmetric instability]], [[conditional symmetric instability|conditional symmetric]] or [[conditional symmetric instability|convective symmetric instability]]; [[barotropic instability]]; [[Helmholtz instability|Helmholtz]] or [[Helmholtz instability|shearing instability]]; [[rotational instability]]
** [[Hydrostatic instability]] or [[static instability]]/[[static instability|vertical instability]] ([[static instability|parcel instability]]), [[thermodynamic instability]] ([[atmospheric thermodynamics]])
*** [[Conditional instability|Conditional]] or [[static instability]], [[buoyant instability]], [[latent instability]], [[nonlocal static instability]], [[conditional-symmetric instability]]; [[convective instability|convective]], [[convective instability|potential]], or [[convective instability|thermal instability]], [[convective instability of the first kind|convective instability of the first]] and [[convective instability of the second kind|second kind]]; [[absolute instability|absolute]] or [[absolute instability|mechanical instability]]
* [[Bénard cells|Bénard instability]]
* Drift mirror instability
* [[Kelvin–Helmholtz instability]] (similar, but different from the [[diocotron instability]] in plasmas)
* [[Rayleigh–Taylor instability]]
* [[Saffman–Taylor instability]]
* [[Plateau-Rayleigh instability]] (similar to the Rayleigh–Taylor instability)
* [[Richtmyer-Meshkov instability]] (similar to the Rayleigh–Taylor instability)
* [[shock wave|Shock Wave]] Instability
* [[Modulational instability|Benjamin-Feir Instability]] (also known as modulational instability)