Abstract
In this paper natural convection is investigated under an inclined temperature gradient with a negative vertical component. This is translated into a negative vertical Rayleigh number RV. This is important in applications when, for example, RV<0 is used to stabilize a liquid layer but a horizontal temperature gradient still persists. Interesting results are found from the numerical analysis of the linear equations. New codimension-two points, where the stationary and oscillatory convection modes compete to be the first unstable one, are found by increasing the magnitude of the negative RV. Besides, the longitudinal stationary modes intersect again for RV<0. Calculations for seven magnitudes of the Prandtl number are presented in detail.
Published Version
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