Abstract

Piston effect and natural convection in two-dimensional square cavity heated from one side are solved numerically in which it is assumed that the temperature of the left-hand-side wall is suddenly increased at t=0. According to the piston effect, the bulk temperature suddenly rises and convection cells are generated near not only hot wall but also cold wall. However, the rise of temperature due to natural convection has no influence on the piston effect, because the difference in time scale between the natural convection and piston effect is very large

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