Heat Flux

Heat flux or thermal flux is the rate of heat energy transfer through a given surface. The SI derived unit of heat rate is joule per second, or watt. Heat flux is the heat rate per unit area. In SI units, heat flux is measured in . Heat rate is a scalar quantity, while heat flux is a vectorial 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 rate, as opposed to mass or momentum rate. Fourier's law is an important application of these concepts.

Read more about Heat FluxMeasuring Heat Flux, Relevance To Science and Engineering

Other articles related to "heat flux, heat, flux":

Nucleate Boiling
... saturated fluid temperature by a certain amount but where the heat flux is below the critical heat flux ... The critical heat flux is the peak on the curve between nucleate boiling and transition boiling ...
Reentry - Thermal Protection Systems - Ablative - SLA-561V
... SLA-561V begins significant ablation at a heat flux of approximately 110 W/cm², but will fail for heat fluxes greater than 300 W/cm² ... Laboratory (MSL) aeroshell TPS is currently designed to withstand a peak heat flux of 234 W/cm² ... The peak heat flux experienced by the Viking-1 aeroshell which landed on Mars was 21 W/cm² ...
Heat Flux - Relevance To Science and Engineering
... if the only way the system exchanges energy with its surroundings is through heat transfer, the heat rate can be used to calculate the energy balance, since where we have integrated the heat flux density over ... In real-world applications one cannot know the exact heat flux at every point on the surface, but approximation schemes can be used to calculate the integral, for ...
Climate Of Uranus - Circulation Models
... One proposed explanation for this dearth of cloud features is that Uranus' internal heat appears markedly lower than that of the other giant planets in astronomical terms, it has a low internal thermal flux ... Why Uranus' heat flux is so low is still not understood ... Uranus, by contrast, radiates hardly any excess heat at all ...
Energy Fluxes Related To Snowmelt
... directions, that is either delivering heat to or removing heat from the snowpack ... Ground heat flux is the energy delivered to the snowpack from the soil below by conduction ... Latent heat flux is the energy removed from or delivered to the snowpack which accompanies the mass transfers of evaporation, sublimation, or condensation ...

Famous quotes containing the words flux and/or heat:

    Beauty is our weapon against nature; by it we make objects, giving them limit, symmetry, proportion. Beauty halts and freezes the melting flux of nature.
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    The hotel was once where things coalesced, where you could meet both townspeople and travelers. Not so in a motel. No matter how you build it, the motel remains the haunt of the quick and dirty, where the only locals are Chamber of Commerce boys every fourth Thursday. Who ever heard the returning traveler exclaim over one of the great motels of the world he stayed in? Motels can be big, but never grand.
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