Kelvin-Helmholtz Shear Layer Growth Calculator
Free shear flows & atmospheric dynamics: Compute the gradient Richardson number ($Ri_g$), Miles-Howard stability margin, Kelvin-Helmholtz rollup wavelength ($\lambda_{KH}$), and spatial shear layer spreading rate ($d\delta/dx$).
Shear Flow & Density Stratification
Vorticity thickness at splitter plate
Stability Criteria & Vortex Rollup
Gradient Richardson Ri_g:
--
Miles-Howard Limit = 0.25
Rollup Wavelength λ_KH:
--
millimeters (mm)
Velocity Shear ΔU:
--
m / s
Spreading Rate dδ/dx:
--
growth rate
Passage Freq f_KH:
--
Hertz (Hz)
Stratification & Miles-Howard Criterion
Convective Velocity U_c:
-- m/s
Brunt-Väisälä N²:
-- s⁻²
Miles-Howard Stability:
--
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