Roughness as a route to the ultimate regime of thermal convection
We use highly resolved numerical simulations to study turbulent Rayleigh-Bénard convection in a cell with sinusoidally rough upper and lower surfaces in two dimensions for Pr=1 and Ra=[4×10^{6},3×10^{9}]. By varying the wavelength λ at a fixed amplitude, we find an optimal wavelength λ_{opt} for whi...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Physical Society
2017
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