convection

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Related to Free convection: Level of free convection, Forced convection

current

 [kur´ent]
1. something that flows.
2. specifically, electricity transmitted through a circuit.
alternating current a current that periodically flows in opposite directions; its amplitude fluctuates as a sine wave.
convection current a current caused by movement by convection of warmer fluid into an area of cooler fluid.
direct current a current that flows in one direction only; when modeled as a wave, its amplitude is constant. When used medically it is called galvanic current. This current has distinct and important polarity and marked secondary chemical effects.
galvanic current a steady direct current.
current of injury an electric current that flows between injured myocardium and normal myocardium, because such cells have a reduced membrane potential; it may be either diastolic or systolic.
current of injury, diastolic the current that flows from injured to noninjured tissue during electrical diastole.
current of injury, systolic the current that flows from healthy tissue to injured tissue during electrical systole.
inwardly rectifying current current that rectifies so that it passes more easily towards the interior of a cell.
leakage current the electrical current that exists in the parts or metal case of electrical equipment.
outwardly rectifying current current that rectifies so that it passes more easily towards the exterior of a cell.
potassium rectifying c's transmembrane currents that rectify inwardly or outwardly to make adjustments in cellular functions; they are mainly responsible for the repolarization phase of the action potential. There are at least six mechanisms by which potassium ions move across cardiac cell membranes in the role of rectifier.

con·vec·tion

(kon-vek'shŭn),
Conveyance of heat in liquids or gases by movement of the heated particles, as when the layer of water at the bottom of a heated pot rises or the warm air of a room ascends to the ceiling.
[L. con-veho, pp. -vectus, to carry or bring together]

con·vec·tion

(kŏn-vek'shŭn)
Conveyance of heat in liquids or gases by movement of the heated particles, as when the layer of water at the bottom of a heated pot rises or the warm air of a room ascends to the ceiling.
[L. con-veho, pp. -vectus, to carry or bring together]

convection

the propagation of heat through liquids and gases by the movement of the heated particles, increasing their kinetic energy.
References in periodicals archive ?
Subbaraya, "Effect of a magnetic field on free convection in a rectangular enclosure," International Journal of Engineering Science, vol.
The positive values of Gr correspond to cooling of the plate and the negative values of Gr correspond to heating of the plate by free convection. As expected, it is found that an increase in the Grashof number leads to increase the velocity due to enhancement in the buoyancy force.
Whereas, the gap between electric power and coolant heat flow in steady state is caused by free convection and heat flow along the test bench fixtures.
[32, 33] presented an analysis on MHD free convection and mass transfer adjacent to moving vertical plate for micropolar fluid in a rotating frame of reference in presence of heat generation/absorption and a chemical reaction using perturbation technique.
In free convection along with other parameters, thermophoresis parameter plays a significant role in the flow, heat transfer, and mass transfer properties.
Sharma, "Possibility similarity solutions of unsteady free convection flow past a vertical plate with suction," Journal of the Physical Society of Japan, vol.
Rao, "Effect of variation in the volumetric expansion coefficient on free convection heat transfer," British Chemical Engineering, vol.
In this case, the background ventilation flow with relatively high velocity will penetrate the free convection flow around the human body, since its maximum velocity is 0.15-0.25 m/s (29.53-49.21 fpm) (Homma and Yakiyama 1988).
[12.] Rafael Cortell and Puertos.: Internal heat generation and radiation effects on a certain free convection flow: International Journal of Nonlinear Science, 9(4), 468-479, (2010).
S., (1960) Steady and transient free convection of an electrically conducting fluid from a vertical plate in the presence of a magnetic field, Appl.
This is the result of the forced convection [[alpha].sub.w] overlaying (the mass speed of the flow is defined unambiguously, for instance, the wind) and natural convection [[alpha].sub.s] (free convection), arising from the operation of the uplift pressure, which is the consequence of the difference in density caused by the difference of temperatures in various places of the liquid.