Rayleigh–Taylor Instability

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Rayleigh–Taylor instability, abbreviated as \(\gamma\)  (Greek symbol gamma), is the instability of an interface between two fluids of different densities which occures when the lighter fluids is pushing the heavier fluid.


Rayleigh–Taylor instability Formula

\(\large{ \gamma = \sqrt{ A \; g \; \alpha }  }\) 
Symbol English Metric
\(\large{ \gamma }\)  (Greek symbol gamma) = Rayleigh–Taylor instability \(\large{\frac{1}{sec}}\)  \(\large{\frac{1}{s}}\)
\(\large{ A } \) = Atwood number \(\large{dimensionless}\)
\(\large{ \alpha }\)  (Greek symbol alpha) = special wavenumber \(\large{\frac{1}{ft}}\) \(\large{\frac{1}{m}}\)
\(\large{ g }\) = standard gravity \(\large{\frac{ft}{sec^2}}\) \(\large{\frac{m}{s^2}}\)


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Tags: Fluid Equations