Direct Numerical Simulations of Turbulent Rayleigh-Bénard Convection in Wide Cylinders
It is well-known that heat transport in Rayleigh-Bénard convection, which can be expressed by the Nusselt number Nu, scales with the Rayleigh number Ra –. Chavanne et al compared numerous experimental results  and showed that the obtained scaling law Nu vs. Ra depends on the aspect ratio a = H/R (where R denotes the radius and H — the height of the cylinder) and the Prandtl number Pr = v/k. While most experiments were conducted in a cylindrical confinement for practical reasons, the majority of the so far performed numerical simulations were conducted for planar configurations
KeywordsRayleigh Number Direct Numerical Simulation Axial Velocity Direct Numerical Simulation Data Numerous Experimental Result
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