The temperature structure and the motions in the atmospheres of cool stars are affected by the underlying convection zone. The radiation hydrodynamics code CO5BOLD has been developed to simulate (small patches of the) convective surface layers of these stars. Updated opacity tables based on PHOENIX data and a description for the formation, destruction, advective transport, and settling of dust ...

I construct a simple model of the convective burning layer during a type I X-ray burst to investigate the effects convection has on the stability of the layer to nonradial oscillations. A linear perturbation analysis demonstrates that the region is stable to nonradial oscillations when energy transport is convection-dominated, but it is unstable when energy transport is radiation-dominated. Thu...

The study of double-diffusive convection has received considerable attention during the last several decades since this occurs in a wide range of natural settings. The origins of these studies can be traced to oceanography when hot salty water lies over cold fresh water of a higher density resulting in double-diffusive instabilities known as “salt-fingers,” Stern (35; 36). Typical technological...

Passive heat transfer from enclosures with rectangular fins is studied both experimentally and theoretically. Several sample enclosures with various lengths are prepared and tested. To calibrate the thermal measurements and the analyses, enclosures without fins (“bare” enclosures) are also prepared and tested. Surface temperature distribution is determined for various enclosure lengths and heat...

The present study concerns with the mixed convection nanofluid flow across a vertical wedge Radiation, MHD, Brownian motion, thermophoresis effects using Lie Group scaling analysis. governing set of highly nonlinear partial differential equations are non-dimensionalized through appropriate transformations and transformed into ordinary Scaling, which is solved numerically Shooting method along b...

Since the 1700s, natural philosophers understood that heat exchange between two bodies was not precisely linearly dependent on the temperature difference, and that at high temperatures the discrepancy became greater. Over the years, many models were developed with varying degrees of success. The lack of success was due to the difficulty obtaining accurate experimental data, and a lack of knowle...

A computer code ICARUS (Injuries CAused by Radiation Upon the Skin) has been developed for evaluating the time to second degree burn injury from thermal radiation. This paper introduces the modelling methodology incorporated in ICARUS and illustrates the validation of the code. It solves the heat transfer problem associated with simultaneous radiation, conduction and convection within a multila...