File:Fse-large-eddy-simulation-v2.svg

Fse-large-eddy-simulation-v2.svg (SVG file, nominally 900 × 600 pixels, file size: 20 KB)

Summary

Velocity at one point against time: DNS follows every fluctuation, LES follows the larger swings, RANS gives only the mean. Based on Cox and Kumar (2002), p. 3-196.

Original illustration for Large eddy simulation, level 4 Expert.

Source basis: Cox and Kumar (2002), p. 3-196 (Figure 3-8.2, schematic of different treatments of turbulence: redraw, do not copy; thermocouple analogy in the text)
Alt text: A jagged velocity trace (DNS), a smoother trace following its large swings (LES) and a straight mean line (RANS).

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New drawing by Fire Safety Academy. © Fire Safety Academy.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:36, 2 November 2026		900 × 600 (20 KB)	Jan (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Large eddy simulation

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Short title	Velocity at one point against time: DNS follows every fluctuation, LES follows the larger swings, RANS gives only the mean. Based on Cox and Kumar (2002), p. 3-196.
Image title	A jagged velocity trace (DNS), a smoother trace following its large swings (LES) and a straight mean line (RANS). Source basis: Cox and Kumar (2002), p. 3-196 (Figure 3-8.2, schematic of different treatments of turbulence: redraw, do not copy; thermocouple analogy in the text)
Width	900
Height	600