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convection    音标拼音: [kənv'ɛkʃən]
n. 传达,对流,对流

传达,对流,对流

convection
对流

convection
对流

convection
n 1: the transfer of heat through a fluid (liquid or gas) caused
by molecular motion
2: (meteorology) the vertical movement of heat or other
properties by massive motion within the atmosphere

Convection \Con*vec"tion\, n. [L. convectio, fr. convehere to
bring together; con- vehere to carry.]
1. The act or process of conveying or transmitting.
[1913 Webster]

2. (Physics) A process of transfer or transmission, as of
heat or electricity, by means of currents in liquids or
gases, resulting from changes of temperature and other
causes.
[1913 Webster]

Liquids are generally heated by convection -- when
heat is applied from below. --Nichol.
[1913 Webster]


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  • Convection | Definition, Examples, Types, Facts | Britannica
    Convection, process by which heat is transferred by movement of a heated fluid such as air or water Natural convection results from the tendency of most fluids to expand when heated—i e , to become less dense and to rise as a result of the increased buoyancy
  • Convection - Wikipedia
    Convection is single or multiphase fluid flow that occurs spontaneously through the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity (see buoyancy) When the cause of the convection is unspecified, convection due to the effects of thermal expansion and buoyancy can be assumed
  • Convection - Definition, Examples, Types - Science Notes and . . .
    Convection is the process of heat transfer within a fluid due to the movement of the fluid itself When a part of the fluid becomes warmer, it typically becomes less dense and rises, while cooler, denser fluid sinks This creates a flow that redistributes heat
  • Understanding Convective Heat Transfer: Coefficients . . .
    Heat energy transferred between a surface and a moving fluid with different temperatures - is known as convection In reality this is a combination of diffusion and bulk motion of molecules Near the surface the fluid velocity is low, and diffusion dominates
  • Convection: What Is It How Does It Work? - Sciencing
    Convection is a method of thermal energy transfer where the transfer of heat occurs via fluid motion This fluid motion is caused by the difference in density between hotter regions of the fluid and cooler regions
  • What is Convection? - BYJUS
    Convection is the process of heat transfer by the bulk movement of molecules within fluids such as gases and liquids The initial heat transfer between the object and the fluid takes place through conduction, but the bulk heat transfer happens due to the motion of the fluid
  • Convection: Definition and Examples - Science Facts
    Convection is the heat transfer process from one region to another due to the movement of fluids like air or water The initial heat transfer occurs through conduction, but the primary transfer occurs through convection It is the dominant form of heat transfer in liquids and gases Types of Convection





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