ISSN Online: 2377-424X
International Heat Transfer Conference 12
Three-dimensional unsteady natural convection in rectangular or sector-like rotating cavities heated from the periphery
Аннотация
Results of CFD modelling of 3D natural convection in closed rotating cavities are presented. The study deals
with cavities in the form of a rectangular parallelepiped and a sectored annulus. The cavities are assumed to be
heated from the periphery, constant temperatures are imposed on the outer and inner boundaries, and either
adiabatic conditions or linear temperature distributions are considered for the remaining walls. The gas inside
the cavities has a Prandtl number of 0.72. The calculations have been performed for Rayleigh numbers above
106. At these conditions unsteady flow regimes occur because of unstable temperature stratification in the
centrifugal force field. Peculiarities of time-dependent velocity and temperature fields and data on temporal
variations of heat transfer are discussed.