Variational Bounds in Turbulent Convection
نویسنده
چکیده
When sufficient energy is steadily supplied to a fluid, the ensuing dynamical behavior involves many spatial and temporal scales and energy is dissipated efficiently. For instance when sufficiently strong heat is supplied against the pull of gravity to a fluid, the heat flux due to fluid flow convection exceeds the heat flux due to molecular diffusion. The average of heat flux is quantified in the Nusselt number N . Numerous experiments and numerical simulations ([1]) under a variety of conditions report power-law behavior
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