A Heat Transfer Textbook by John H. Lienhard IV and John H
... are in. If you leave the room, some small buoyancy-driven (or convective) motion of the air will continue because the walls can never be perfectly isothermal. Such processes go on in all plant and animal life and in the air around us. They occur throughout the earth, which is hot at its core and coo ...
... are in. If you leave the room, some small buoyancy-driven (or convective) motion of the air will continue because the walls can never be perfectly isothermal. Such processes go on in all plant and animal life and in the air around us. They occur throughout the earth, which is hot at its core and coo ...
Simulating the outer layers of Procyon A: a comparison with the Sun
... back again over a time of 20–30 min. This motion, which is driven by the granulation, takes place in a time approximately half the turnover time of the largest granules. (iii)The peak rms velocity in the vertical direction is much larger in Procyon A. The main reason for the radically different radi ...
... back again over a time of 20–30 min. This motion, which is driven by the granulation, takes place in a time approximately half the turnover time of the largest granules. (iii)The peak rms velocity in the vertical direction is much larger in Procyon A. The main reason for the radically different radi ...
SCHAUM`S OUTLINE OF THEORY AND PROBLEMS OF HEAT
... Gases at High Pressures ...................................................................................... Table B-1 (SI). Property Values of Metals .......................................................................... Table B-2 (SI). Property Values of Nonmetals ........................... ...
... Gases at High Pressures ...................................................................................... Table B-1 (SI). Property Values of Metals .......................................................................... Table B-2 (SI). Property Values of Nonmetals ........................... ...
2014a Kirsch IGTACE
... and are integral in extending these lifetimes as engine designs progress. Cooling schemes are present on the exterior of components as well as in internal passages. Internal cooling can take numerous forms but in areas where structural support, in addition to high heat removal is necessary, pin fin ...
... and are integral in extending these lifetimes as engine designs progress. Cooling schemes are present on the exterior of components as well as in internal passages. Internal cooling can take numerous forms but in areas where structural support, in addition to high heat removal is necessary, pin fin ...
Thermo-chemical convection in Earth`s inner core
... by the possible presence of a chemical stratification, which may arises as a result of solidification-induced partitioning of the light elements present in the core (Stacey 1995; Deguen & Cardin 2009). Since chemically and thermally induced density variations can be of the same order of magnitude, t ...
... by the possible presence of a chemical stratification, which may arises as a result of solidification-induced partitioning of the light elements present in the core (Stacey 1995; Deguen & Cardin 2009). Since chemically and thermally induced density variations can be of the same order of magnitude, t ...
On the genesis of the Earth`s magnetism
... Few areas of geophysics are today progressing as rapidly as basic geomagnetism, which seeks to understand the origin of the Earth’s magnetism. Data about the present geomagnetic field pours in from orbiting satellites, and supplements the ever growing body of information about the field in the remot ...
... Few areas of geophysics are today progressing as rapidly as basic geomagnetism, which seeks to understand the origin of the Earth’s magnetism. Data about the present geomagnetic field pours in from orbiting satellites, and supplements the ever growing body of information about the field in the remot ...
Figures
... conceptual model of the field. The reservoir consists of two perpendicular sets of fractures and faults, related to major regional tectonic structures. The capacitive and transmissive functions of the field are assured by these deep faults and fractures, which have been clogged near surface by self ...
... conceptual model of the field. The reservoir consists of two perpendicular sets of fractures and faults, related to major regional tectonic structures. The capacitive and transmissive functions of the field are assured by these deep faults and fractures, which have been clogged near surface by self ...
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.