The effects of radiative heat transfer on the fully developed free convection flow of a viscous incompressible fluid-saturated porous medium between two vertical walls in the presence of a uniform gravitational field have been studied. An exact solution of the governing equations has been obtained. Radiation is found to have significant effects on the velocity field and temperature distribution...

A quasi-analytic model has been developed to examine energy conversion during the microwave sintering of a ceramic that is surrounded by a susceptor. Low-loss ceramics, such as ZrO2, couple poorly with microwave radiation at low temperatures; however, because the dielectric loss usually increases rapidly as temperature increases, coupling improves dramatically at high temperatures. To improve h...

Steady two-dimensional Magneto hydrodynamic free convection flow with thermal radiation in the presence of magnetic field along a vertical flat plate is concerned in the present study. The fluid is taken to be gray, absorbing-emitting radiation. The non-linear governing equations have been transformed by the usual similarity transformation to a system of ordinary differential equations. These d...

This investigation examines the dynamical processes that drive the anomalous friction torque associated with intraseasonal length-of-day fluctuations. Diagnostic analyses with National Centers for Environmental Protection– National Center for Atmospheric Research reanalysis and National Oceanic and Atmospheric Administration outgoing longwave radiation data are performed. The approach adopted i...

This paper describes a series of three-dimensional simulations of shallow inefficient convection in the outer layers of the Sun. The computational domain is a closed box containing the convection–radiation transition layer, located at the top of the solar convection zone. The most salient features of the simulations are that: (i) the position of the lower boundary can have a major effect on the...

The atmosphere of the Sun is characterized by a complex interplay of competing physical processes: convection, radiation, conduction, and magnetic fields. The most obvious imprint of the solar convection and its overshooting in the low atmosphere is the granulation pattern. Beside this dominating scale there is a more or less smooth distribution of spatial scales, both towards smaller and large...

By simulating the convection in the upper layers of seven diierent stars and matching these simulations to 1D mixing-length models using the same input physics, we have been able to infer the behaviour of the T-relation and the mixing-length parameter, , as the stellar parameters change. We have then used this knowledge in stellar evolution calculations, in order to investigate the consequences...

[1] Several chains of receivers, measuring total electron content (TEC) during passes of satellites in the U.S. Navy Ionospheric Measuring System (NIMS), are operated at northern high latitudes by members of the International Ionospheric Tomography Community (IITC). Results are presented here of nearly simultaneous latitude-altitude images of the ionosphere over Scandinavia, Greenland, and Alas...

Title: Severe Convective Mesosystems in New England Author: James Elbert Kester Submitted to the Department of Meteorology on February 5, 1974 in partial fulfillment of the requirements for the degree of Master of Science. This study of convection over New England is divided into two parts. Part I is a search for a consistent mesoscale pressure pattern associated with severe convective storms o...