نتایج جستجو برای: rotating mixed convection
تعداد نتایج: 278836 فیلتر نتایج به سال:
Convection in planetary cores can generate fluid flow and magnetic fields, and a number of sophisticated codes exist to simulate the dynamical behaviour of such systems. We report on the first community activity to compare numerical results of computer codes designed to calculate fluid flow within a whole sphere. The flows are incompressible and rapidly rotating and the forcing of the flow is e...
An asymptotic theory is presented to describe the possible mechanism for the excitation and maintenance of torsional oscillations in rotating convective stars and planets. It is demonstrated analytically that the torsional oscillations can be excited and sustained by global thermal convection. Subject headings: convection — hydrodynamics — stars: interiors
The initial bifurcations in rotating Rayleigh-Bénard convection are studied in the range of dimensionless rotation rate 0 < Ω < 2150 for an aspect-ratio-2.5 cylindrical cell. We used simultaneous optical shadowgraph, heat transport and local temperature measurements to determine the stability and characteristics of the azimuthally-periodic wall convection state. We also show that the second tra...
this paper presents results of a numerical study of mixed convection and entropy generation of cu–water nanofluid in a square ventilating cavity at different inclination angles. except a piece of bottom wall with a uniform heat flux, all of the cavity walls are insulated. the inlet port is placed at the bottom of the left wall and the outlet port is positioned at the top of the right wall. entr...
This work studies the mixed convection heat transfer from a vertical plate in bidisperse porous media with constant wall temperature. The two-velocity two-temperature model is used to derive the governing equations. The effects of the mixed convection parameter, the inter-phase heat transfer parameter, the modified thermal conductivity ratio, and the permeability ratio on the heat transfer and ...
The classical Fourier law, which typically provides a very accurate description of heat transport, is, nonetheless, only an approximation, since it allows for propagation information at infinite speed. Corrections to the are small, referred as Maxwell-Cattaneo (M-C) effect. Here we study onset rotating convection, problem geophysical and astrophysical relevance, incorporating M-C We show how, h...
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