Heat flux

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  • Heat Flux
definition
  • Heat flux is the amount of heat that is transferred across a surface of unit area in a unit of time. Also refers to latent and sensible heat fluxes in the atmosphere and between the Earth's surface and atmosphere.
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Abstract from DBPedia
    Heat flux or thermal flux, sometimes also referred to as heat flux density, heat-flow density or heat flow rate intensity is a flow of energy per unit of area per unit of time. In SI its units are watts per square metre (W/m2). It has both a direction and a magnitude, and so it is a vector quantity. To define the heat flux at a certain point in space, one takes the limiting case where the size of the surface becomes infinitesimally small. Heat flux is often denoted , the subscript q specifying heat flux, as opposed to mass or momentum flux. Fourier's law is an important application of these concepts.

    熱流束(ねつりゅうそく、英: heat flux)とは、流束のひとつで、単位時間に単位面積を横切る熱量である。単位には W/m2 が用いられる。フーリエの法則によれば、熱流束は熱の流れる方向の温度勾配に比例する。その比例係数を熱伝導率(記号ρ)という。

    (Source: http://dbpedia.org/resource/Heat_flux)

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