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... near the magnetic conjugate regions of the MACCS and the Greenland magnetometers. IMF data and solar wind plasma data from the ACE, Wind, IMP 8, Geotail, and Interball satellites were used for study of the solar wind sources of these two events. [7] In Figures 1 and 2, we illustrate the solar wind a ...
... near the magnetic conjugate regions of the MACCS and the Greenland magnetometers. IMF data and solar wind plasma data from the ACE, Wind, IMP 8, Geotail, and Interball satellites were used for study of the solar wind sources of these two events. [7] In Figures 1 and 2, we illustrate the solar wind a ...
WINTER NIGHT HABITS OF BIRDS
... If a bird is completely enclosed in a wooden box, or in a tree cavity, or cave, and if the temperature of the outer plumage surface is the same as the temperature of the walls of the complete enclosure, there will be no net loss (or gain) of heat by radiation. The outer plumage surface will emit, an ...
... If a bird is completely enclosed in a wooden box, or in a tree cavity, or cave, and if the temperature of the outer plumage surface is the same as the temperature of the walls of the complete enclosure, there will be no net loss (or gain) of heat by radiation. The outer plumage surface will emit, an ...
The Science of Insulation
... then the thermal conductivity of materials generally increases. This is not a phenomenon that is of concern in buildings because the variance only becomes significant at temperatures which would not be experienced in normal conditions. It is a consideration when insulating building services and high ...
... then the thermal conductivity of materials generally increases. This is not a phenomenon that is of concern in buildings because the variance only becomes significant at temperatures which would not be experienced in normal conditions. It is a consideration when insulating building services and high ...
Тепломассообмен
... field produced, say, by a band playing music may cause interactions in the form of dancing. We are a product of our environment, interacting with fields about us. 4. It is possible, that several fields coexist in any given region. An airliner responds to the thrust of its jets (force field), require ...
... field produced, say, by a band playing music may cause interactions in the form of dancing. We are a product of our environment, interacting with fields about us. 4. It is possible, that several fields coexist in any given region. An airliner responds to the thrust of its jets (force field), require ...
8 Transport Properties
... The next figure illustrates several layers of atoms. In the process of dislocation creep, a truncated layer of atoms connects to an adjacent layer, thereby shifting the dislocation (and the material) over. By a sequence of such steps there will be a net strain. Although dislocations are thermally ac ...
... The next figure illustrates several layers of atoms. In the process of dislocation creep, a truncated layer of atoms connects to an adjacent layer, thereby shifting the dislocation (and the material) over. By a sequence of such steps there will be a net strain. Although dislocations are thermally ac ...
The effect of Wind Energy consumption in buildings
... of convective losses for simple building shapes in the wind tunnel are approximately 50% higher than those given by the parallel flow flat-plate formula. A surface forced convection coefficient 50% higher for single-pane glass would result in the U-values shown by the broken line in Fig. 4. It can b ...
... of convective losses for simple building shapes in the wind tunnel are approximately 50% higher than those given by the parallel flow flat-plate formula. A surface forced convection coefficient 50% higher for single-pane glass would result in the U-values shown by the broken line in Fig. 4. It can b ...
ABSTRACT: CFD analysis of flow and temperature
... is shown in Fig.7f. Due to heating, air density decreases. The air with lower density tends to move due to buoyancy and flows through the foodstuffs in the central region of the oven, thus heats the foodstuffs. Once the air reaches the top of the oven, which is relatively at lower temperature, and h ...
... is shown in Fig.7f. Due to heating, air density decreases. The air with lower density tends to move due to buoyancy and flows through the foodstuffs in the central region of the oven, thus heats the foodstuffs. Once the air reaches the top of the oven, which is relatively at lower temperature, and h ...
Physics, Chapter 18: Transfer of Heat
... water moves down to replace it. The colder water, in turn, is heated; once hot, it rises because of its smaller density, thus setting up a circulation of the liquid. During this circulation the warmer parts of the liquid mix with the cooler parts, and in a short time a fairly uniform temperature is ...
... water moves down to replace it. The colder water, in turn, is heated; once hot, it rises because of its smaller density, thus setting up a circulation of the liquid. During this circulation the warmer parts of the liquid mix with the cooler parts, and in a short time a fairly uniform temperature is ...
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.