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Showing 1 to 11 of 11 for “"Rayleigh Benard convection"”.
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Axisymmetric Rayleigh-Benard convection
This thesis considers axisymmetric Rayleigh-Benard convection in an infinite horizontal layer of fluid heated from below major emphasis is placed on a study of the effect of rotation of the layer, where both the stationary and overstable cases are analysed. In Chapter 2, a numerical solution of the …
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Lagrangian dynamics of turbulent Rayleigh-Benard convection
U of I Only Restriction Lifted for Item 112217 on 2021-08-24T09:15:10Z.
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The Spatial Structure of Turbulent Rayleigh-Benard Convection
… the cellular structures commonly observed at low Rayleigh numbers. The circulation cells are proposed as a physical description (not an explanation) of the phenomenon referred to in the literature as the wind of turbulence. They were found to contain approximately 40% of the total kinetic energy, …
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Investigation of mean flow and vertical vorticity in turbulent convection using spectral simulations on massively parallel processors
Direct numerical simulations of Rayleigh-Benard convection are performed at several values of Rayleigh number (Ra). The computational domain consists of a square-planform rectangular box with horizontal-to-vertical aspect ratio equal to four. This domain is periodic in the horizontal directions, …
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The effects of thermal radiation on dry convection
… models. The first type of model resembles Rayleigh-Benard convection, except that thermal radiative transfer is included. This type of system can be investigated in the laboratory. The second type of model is a more faithful representation of the earth's atmosphere. In this model, the …
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Zonal flow driven by convection and convection driven by internal heating
In the first part, Rayleigh-Benard convection is studied in a two-dimensional, horizontally periodic domain with free-slip top and bottom boundaries. This configuration encourages mean horizontal flows of zero horizontal wavenumber, which we study as an idealization of zonal flows in tokamaks, …
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Pattern formation in squares and rectangles
… to patterns observed in physical systems such as Rayleigh-Benard convection.
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Flow and stability studies in porous media based on some non-Darcian models.
… look is taken at the problem of steady convection in porous media, again using the generalized Brinkman equation. A variational formulation is introduced to define a weak solution and existence, uniqueness, and regularity of the weak solution are discussed. In the second part, two …
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Pattern Formation in Rotating Fluid Systems under the Influence of Magnetic Fields
… in time. One of the best studied examples is the convection instability when a fluid layer is subjected to a temperature gradient. For instance, in a horizontal fluid layer heated from below and cooled from above a striped patterns of convection rolls develop. This scenario describes the famous …
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Hydrodynamics of Cyclogenesis from Numerical Simulations
… better forecasting models. The rotating Rayleigh-Benard convection (RRBC) model has been very effective and widely used in numerical simulations and by experimentalists to understand complex geophysical flows. Therefore in this work, the same RRBC model is used to carry out 3D numerical …