Secondary Convection in a Fluid between Parallel Vertical Plates of Different Temperatures

概要

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The development of secondary convection in a fluid between two parallel vertical walls at different temperatures is investigated in states close to the critical state in the stability of the primary convection. The velocity and the temperature are each decomposed into the mean (averaged with respect to the vertical distance) and the fluctuation. The fluctuation is assumed to take the same spatial from as the infinitesimal disturbance at the critical state. The development of the fluctuations is traced through the energy integrals while the mean quantities through the averaged basic equations. Numerical calculations are mode on water. For a fixed value of Grashof nomber the convection approaches to an equilibrium state irrespective of the initial conditions. Flow pattern and isothermals in an equilibrium state are shown graphically. Due to the occurrence of the secondary convection, thermal conductivity of the fluid increases apparently, while the momentum flux decreases.
社団法人日本物理学会の論文
1972-12-05