Long-term unsteadiness and large-scale structures in Rayleigh-Bénard convection
... in a wide range of (geo)physical situations, like in the atmosphere, the oceans and planetary mantles. It also plays an important role in many engineering applications, like crystal growth processes and in-door climate studies. Convection is enacted by body forces acting within the fluid, such as th ...
... in a wide range of (geo)physical situations, like in the atmosphere, the oceans and planetary mantles. It also plays an important role in many engineering applications, like crystal growth processes and in-door climate studies. Convection is enacted by body forces acting within the fluid, such as th ...
First Progress Report.pdf
... defined by the Peltier-Seebeck effect. Thermoelectric devices have been used for temperature regulation by operating as a heat pump to maintain computing devices and integrated circuits at optimum temperatures for improved processing efficiency. Thermoelectrics have also been used to capture microwa ...
... defined by the Peltier-Seebeck effect. Thermoelectric devices have been used for temperature regulation by operating as a heat pump to maintain computing devices and integrated circuits at optimum temperatures for improved processing efficiency. Thermoelectrics have also been used to capture microwa ...
Supplementary Notes - Word file
... (Grasset and Parmentier 1998, Dumoulin et al. 1999, Deschamps and Sotin 2001, Tobie 2003). In order to self-consistently include heating from within and from below, those scaling laws are constrained from numerical experiments of thermal convection including viscosity-dependent tidal heating (Tobie ...
... (Grasset and Parmentier 1998, Dumoulin et al. 1999, Deschamps and Sotin 2001, Tobie 2003). In order to self-consistently include heating from within and from below, those scaling laws are constrained from numerical experiments of thermal convection including viscosity-dependent tidal heating (Tobie ...
Chapter 3: heat flow
... where M is the mass of the Earth. For Cp 1000J kg−1 K−1 we get ∆T 3500K. We conclude that core formation could raise the temperature of the Earth by several thousand degrees, enough to completely melt it and drive off most of the more volatile materials as well. It is therefore likely that much ...
... where M is the mass of the Earth. For Cp 1000J kg−1 K−1 we get ∆T 3500K. We conclude that core formation could raise the temperature of the Earth by several thousand degrees, enough to completely melt it and drive off most of the more volatile materials as well. It is therefore likely that much ...
Convective heat transfer for fluids passing through
... which temperature measurements could be taken at a stabilized temperature profile. According to the information reported elsewhere, the temperature profile for the horizontal flow through metal foams becomes stabilized at the distance which is equal to 3–4 times the duct transverse size (the length ...
... which temperature measurements could be taken at a stabilized temperature profile. According to the information reported elsewhere, the temperature profile for the horizontal flow through metal foams becomes stabilized at the distance which is equal to 3–4 times the duct transverse size (the length ...
A scaling law for approximating porous hydrothermal convection by
... is observed. Within their scatter and uncertainties heat flow and bathymetry data are in general agreement with our hydrothermally enforced cooling model suggesting that hydrothermal convection may be important even up to high ages. Key words: Heat flow; Hydrothermal systems; Permeability and porosi ...
... is observed. Within their scatter and uncertainties heat flow and bathymetry data are in general agreement with our hydrothermally enforced cooling model suggesting that hydrothermal convection may be important even up to high ages. Key words: Heat flow; Hydrothermal systems; Permeability and porosi ...
... electrically conducting fluid in presence of applied magnetic field in connection with the theories of fluid motion in the liquid core of the Earth and also meteorological and oceanographic applications. In recent years, the analysis of hydromagnetic flow involving heat and mass transfer in porous m ...
Dimensional Analysis and Correlations
... Table 1.1: Dimensions and units of some commonly used quantities in transport processes. In the present course, we will only analyse quantities with the mass M, length L, time T and temperature Υ dimensions. All other physical quantities can be expressed in terms of these fundamental quantities. Som ...
... Table 1.1: Dimensions and units of some commonly used quantities in transport processes. In the present course, we will only analyse quantities with the mass M, length L, time T and temperature Υ dimensions. All other physical quantities can be expressed in terms of these fundamental quantities. Som ...
Convection
Convection is the concerted, collective movement of groups or aggregates of molecules within fluids (e.g., liquids, gases) and rheids, through advection or through diffusion or as a combination of both of them. Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can take place in solids. Diffusion of heat can take place in solids, but that is called heat conduction. Convection cannot be demonstrated by placing a heat source (e.g. a Bunsen burner) at the side of a glass full of a liquid, and observing the changes in temperature in the glass caused by the warmer ghost fluid moving into cooler areas.Convective heat transfer is one of the major types of heat transfer, and convection is also a major mode of mass transfer in fluids. Convective heat and mass transfer take place both by diffusion – the random Brownian motion of individual particles in the fluid – and by advection, in which matter or heat is transported by the larger-scale motion of currents in the fluid. In the context of heat and mass transfer, the term ""convection"" is used to refer to the sum of advective and diffusive transfer. In common use the term ""convection"" may refer loosely to heat transfer by convection, as opposed to mass transfer by convection, or the convection process in general. Sometimes ""convection"" is even used to refer specifically to ""free heat convection"" (natural heat convection) as opposed to forced heat convection. However, in mechanics the correct use of the word is the general sense, and different types of convection should be qualified for clarity.Convection can be qualified in terms of being natural, forced, gravitational, granular, or thermomagnetic. It may also be said to be due to combustion, capillary action, or Marangoni and Weissenberg effects. Heat transfer by natural convection plays a role in the structure of Earth's atmosphere, its oceans, and its mantle. Discrete convective cells in the atmosphere can be seen as clouds, with stronger convection resulting in thunderstorms. Natural convection also plays a role in stellar physics.