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- Convective_heat_transfer abstract "Convective heat transfer, often referred to simply as convection, is the transfer of heat from one place to another by the movement of fluids. Convection is usually the dominant form of heat transfer in liquids and gases. Although often discussed as a distinct method of heat transfer, convective heat transfer involves the combined processes of conduction (heat diffusion) and advection (heat transfer by bulk fluid flow).The term convection can sometimes refer to transfer of heat with any fluid movement, but advection is the more precise term for the transfer due only to bulk fluid flow. The process of transfer of heat from a solid to a fluid, or the reverse, is not only transfer of heat by bulk motion of the fluid, but diffusion and conduction of heat through the still boundary layer next to the solid. Thus, this process without a moving fluid requires both diffusion and advection of heat, a process that is usually referred to as convection. Convection that occurs in the earth's mantle causes tectonic plates to move.Convection can be "forced" by movement of a fluid by means other than buoyancy forces (for example, a water pump in an automobile engine). Thermal expansion of fluids may also force convection. In other cases, natural buoyancy forces alone are entirely responsible for fluid motion when the fluid is heated, and this process is called "natural convection". An example is the draft in a chimney or around any fire. In natural convection, an increase in temperature produces a reduction in density, which in turn causes fluid motion due to pressures and forces when fluids of different densities are affected by gravity (or any g-force). For example, when water is heated on a stove, hot water from the bottom of the pan rises, displacing the colder denser liquid, which falls. After heating has stopped, mixing and conduction from this natural convection eventually result in a nearly homogeneous density, and even temperature. Without the presence of gravity (or conditions that cause a g-force of any type), natural convection does not occur, and only forced-convection modes operate.The convection heat transfer mode comprises one mechanism. In addition to energy transfer due to specific molecular motion (diffusion), energy is transferred by bulk, or macroscopic, motion of the fluid. This motion is associated with the fact that, at any instant, large numbers of molecules are moving collectively or as aggregates. Such motion, in the presence of a temperature gradient, contributes to heat transfer. Because the molecules in aggregate retain their random motion, the total heat transfer is then due to the superposition of energy transport by random motion of the molecules and by the bulk motion of the fluid. It is customary to use the term convection when referring to this cumulative transport and the term advection when referring to the transport due to bulk fluid motion.".
- Convective_heat_transfer thumbnail Convection-snapshot.png?width=300.
- Convective_heat_transfer wikiPageID "9662955".
- Convective_heat_transfer wikiPageLength "8717".
- Convective_heat_transfer wikiPageOutDegree "21".
- Convective_heat_transfer wikiPageRevisionID "681154728".
- Convective_heat_transfer wikiPageWikiLink Advection.
- Convective_heat_transfer wikiPageWikiLink Bulk_temperature.
- Convective_heat_transfer wikiPageWikiLink Category:Heat_transfer.
- Convective_heat_transfer wikiPageWikiLink Category:Thermodynamics.
- Convective_heat_transfer wikiPageWikiLink Conduction_(heat).
- Convective_heat_transfer wikiPageWikiLink Convection.
- Convective_heat_transfer wikiPageWikiLink Fluid_dynamics.
- Convective_heat_transfer wikiPageWikiLink Fluid_flow.
- Convective_heat_transfer wikiPageWikiLink Forced_convection.
- Convective_heat_transfer wikiPageWikiLink G-force.
- Convective_heat_transfer wikiPageWikiLink Heat_transfer_coefficient.
- Convective_heat_transfer wikiPageWikiLink Heat_transfer_enhancement.
- Convective_heat_transfer wikiPageWikiLink Heisler_Chart.
- Convective_heat_transfer wikiPageWikiLink Heisler_chart.
- Convective_heat_transfer wikiPageWikiLink Natural_convection.
- Convective_heat_transfer wikiPageWikiLink Stove.
- Convective_heat_transfer wikiPageWikiLink Thermal_conduction.
- Convective_heat_transfer wikiPageWikiLink Thermal_conductivity.
- Convective_heat_transfer wikiPageWikiLink File:Convection-snapshot.png.
- Convective_heat_transfer wikiPageWikiLink File:Convection_demo_with_radiator_and_papers.jpg.
- Convective_heat_transfer wikiPageWikiLink File:Thermal-plume-from-human-hand.jpg.
- Convective_heat_transfer wikiPageWikiLinkText "Convection".
- Convective_heat_transfer wikiPageWikiLinkText "Convective heat transfer".
- Convective_heat_transfer wikiPageWikiLinkText "Convective heat transfer#Newton's law of cooling".
- Convective_heat_transfer wikiPageWikiLinkText "Convective heat transfer#Newton.27s law of cooling".
- Convective_heat_transfer wikiPageWikiLinkText "Convective_heat_transfer#Newton.27s_law_of_cooling".
- Convective_heat_transfer wikiPageWikiLinkText "Heat transfer by convection".
- Convective_heat_transfer wikiPageWikiLinkText "Newton's law of cooling".
- Convective_heat_transfer wikiPageWikiLinkText "Newton’s Law of Cooling".
- Convective_heat_transfer wikiPageWikiLinkText "convection heat transfer".
- Convective_heat_transfer wikiPageWikiLinkText "convection heating".
- Convective_heat_transfer wikiPageWikiLinkText "convection".
- Convective_heat_transfer wikiPageWikiLinkText "convective circulation".
- Convective_heat_transfer wikiPageWikiLinkText "convective cooling or warming".
- Convective_heat_transfer wikiPageWikiLinkText "convective heat loss".
- Convective_heat_transfer wikiPageWikiLinkText "convective heat transfer".
- Convective_heat_transfer wikiPageWikiLinkText "convective".
- Convective_heat_transfer wikiPageWikiLinkText "heat convection".
- Convective_heat_transfer wikiPageWikiLinkText "natural convection".
- Convective_heat_transfer wikiPageWikiLinkText "thermal convection".
- Convective_heat_transfer hasPhotoCollection Convective_heat_transfer.
- Convective_heat_transfer wikiPageUsesTemplate Template:Citation_needed.
- Convective_heat_transfer wikiPageUsesTemplate Template:Main.
- Convective_heat_transfer wikiPageUsesTemplate Template:Reflist.
- Convective_heat_transfer wikiPageUsesTemplate Template:See_also.
- Convective_heat_transfer subject Category:Heat_transfer.
- Convective_heat_transfer subject Category:Thermodynamics.
- Convective_heat_transfer hypernym Transfer.
- Convective_heat_transfer type Article.
- Convective_heat_transfer type Organisation.
- Convective_heat_transfer type Article.
- Convective_heat_transfer type Concept.
- Convective_heat_transfer type Physic.
- Convective_heat_transfer type Thermodynamic.
- Convective_heat_transfer type Thing.
- Convective_heat_transfer comment "Convective heat transfer, often referred to simply as convection, is the transfer of heat from one place to another by the movement of fluids. Convection is usually the dominant form of heat transfer in liquids and gases.".
- Convective_heat_transfer label "Convective heat transfer".
- Convective_heat_transfer seeAlso Heat_transfer.
- Convective_heat_transfer sameAs حمل_حراري.
- Convective_heat_transfer sameAs قانون_سرد_شدن_نیوتن.
- Convective_heat_transfer sameAs מעבר_חום_בהסעה.
- Convective_heat_transfer sameAs Hőáramlás.
- Convective_heat_transfer sameAs Konwekcja_swobodna.
- Convective_heat_transfer sameAs Transferência_de_calor_convectiva.
- Convective_heat_transfer sameAs m.0crcnmd.
- Convective_heat_transfer sameAs Q918227.
- Convective_heat_transfer sameAs Q918227.
- Convective_heat_transfer sameAs 对流传热.
- Convective_heat_transfer wasDerivedFrom Convective_heat_transfer?oldid=681154728.
- Convective_heat_transfer depiction Convection-snapshot.png.
- Convective_heat_transfer isPrimaryTopicOf Convective_heat_transfer.