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Direct numerical simulation of unsheared turbulence diffusing toward a free-slip or no-slip surface

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Academic year: 2021

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Figure

Figure 1. Sketch of the flow configuration (a) and general idea of the flow field (b)
Figure 2. Turbulence-generation method. (a) Isosurfaces of the force modulus in the three types of ele- ele-mentary force fields e(x); (b) plot of the forcing function φ(x); (c) typical arrangement of the forcing boxes at a given time step, each colour ref
Figure 3. Profiles of (a) the Reynolds stresses and turbulent kinetic energy across the flow, and (b) of the corresponding isotropy factor I u = w 0 /u 0
Figure 4. Profiles of (a) the variances of the vorticity components and enstrophy [ω 2 = (ω 2 x + ω 2 y + ω 2 )/2], and (b) of the corresponding isotropy factor I ω = ω x0 /ω 0 z
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