Turbulent water jet Note range of eddy scales and self- similar - PowerPoint PPT Presentation

Mar 09, 2023 •400 likes •482 views

Turbulent water jet Note range of eddy scales and self- similar structure. Big whirls have little whirls, That feed on their velocity; And little whirls have lesser whirls, And so on to viscosity. - L. F. Richardsons prescient 1922

Turbulent water jet Note range of eddy scales and self- similar structure. “Big whirls have little whirls, That feed on their velocity; And little whirls have lesser whirls, And so on to viscosity.” - L. F. Richardson’s prescient 1922 book: Weather Prediction by Numerical Process Atm S 547 Lecture 2, Slide 1
Lag-correlation and integral timescale for turbulence Atm S 547 Lecture 2, Slide 2
Skewness Atm S 547 Lecture 2, Slide 3
Schematic turbulent energy spectrum Atm S 547 Lecture 2, Slide 4
Time series/power spectrum of w in convection Time series Power spectrum 100 s 0 600 s « 4.2 km Atm S 547 Lecture 2, Slide 5
velocity cascades to large scales 2D 3D turbulence vorticity to small scales Atm S 547 Lecture 2, Slide 6
Quasigeostrophic turbulence (2D-like ζ vortices, filaments) Atm S 547 Lecture 2, Slide 7

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