natural convection

natural convection

[′nach·rəl kən′vek·shən]
(thermodynamics)
Convection in which fluid motion results entirely from the presence of a hot body in the fluid, causing temperature and hence density gradients to develop, so that the fluid moves under the influence of gravity. Also known as free convection.

natural convection

The convection resulting from the flow of air caused by temperature differences in an enclosed space, as opposed to the flow of air caused by a fan. Also known as free convection.
References in periodicals archive ?
Tenders are invited for purchase of stefan boltzmann apparatus and heat transfer in natural convection (vertical tube)apparatus
Density of the gas mixture in the reactor gradually increases as air enters by the molecular diffusion and natural convection of the gas mixture in the first stage of the accident.
Convective heat transfer is divided into three categories: (1) forced convection heat transfer; (2) natural convection heat transfer; and (3) mixed convection heat transfer.
The effect of gravitational modulation on natural convection in a porous layer was studied by Govender [7].
To be able to make the machines smaller without reducing the power, it is important to get a better cooling of the machine, preferably by using natural convection. The convection describes the exchange of thermal energy between physical systems depending on the thermal, velocity, and pressure, by dissipating heat.
Our proposed technology is the liquid immersion technology with natural convection, without any pumping or any fan in the bathtub for the refrigerant circulation.
The nacelle is considered air-tight, therefore the natural convection problem within the nacelle can be treated independently from the external conditions.
These units can deliver 650 W with forced-air cooling (750 W peak) or 400 W with free-air natural convection cooling (650 W peak) and feature less than 500 mW no-load power consumption.
Choi and Kim [16] compared the use of finned circular tube to a tube without fins and conveyed that the heat transfer from the tube to the PCM was influenced by the natural convection of the melting PCM, especially in the tube system without fins.
The numerical simulation of natural convection of various fluids in different geometries has become the most widely used approach because of its low cost and the accuracy of its predictions.
Natural convection flows with heat and mass stratification are frequently encountered in nature.