temperature gradient


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temperature gradient

[′tem·prə·chər ‚grād·ē·ənt]
(thermodynamics)
For a given point, a vector whose direction is perpendicular to an isothermal surface at the point, and whose magnitude equals the rate of change of temperature in this direction.
References in periodicals archive ?
In airborne heating systems, air velocity in the human occupancy zone usually remains low and, therefore, is not a cause for concern, while the air temperature gradient and air mixing are subjects to be thoroughly analyzed.
It was found that as the welding speeds gradually increased, temperature gradient of point A and point B gradually increased, the flow velocity at the bottom of the molten pool also increased, and the flowing trend of molten layer of the rear part of keyhole flowing up and toward the rear molten pool gradually increased, and it meant that the molten pool behavior was relatively stable.
2 (corresponding to a temperature gradient of 136 K (245[degrees]F) for every two zones) creates four zones for the first floor (0-8 m [26 ft]) and one zone in the secod, whereas [beta] = 0.
The temperature gradient for each of the selected loading periods has been established.
In these cases, the temperature gradient is expressed in relation to meteorological and geometric parameters, as a function of height above the ground, tilted surface, zenith distance of the Sun and the height variation of heat fluxes.
5 cm with fresh seawater, which quickly attained the same horizontal temperature gradient as that of the aluminum block.
This phenomenon may be related to a certain positive temperature gradient which results in flat slab condition.
The qualitative and quantitative analysis showed that as a result of using a heat exchange area with protrusions, the temperature gradient increased as opposed to the situation, when the exchange areas had no protrusions, which was also reflected in the increased heat transfer coefficient [alpha].
Bn = Heat flux magnitude x Temperature gradient magnitude x sting bottlenecks.
It is clear that by increasing the temperature gradient the movement increases.

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