natural convection

The Study of Frost Growth Regularity on Vertical Cold Surface in Natural Convection

自然对流条件下竖直冷平板霜生长规律的研究

The natural convection of the two-dimensional square cavity with horizontal isothermal baffles is studied.

计算研究了有水平等温阻流件的二 维 封闭方腔中空气的自然对流换热.

The temperature boundary layer of a natural convection along a vertical heated plate is measured quantitatively.

对沿竖直加热平板自然对流的温度边界层进行了定量地测量。

Analyses on condition for generating the natural convection show that the natural convection results from the non-conservative body force, so, its enhancement and control can also be achieved by active control of the body force acting on the fluid.

然而，对自然对流产生条件的分析表明，非保守体积力的驱动是自然对流形成的原因，通过主动控制流体所受体积力形态，也可以实现自然对流换热的强化和控制。

Other information on natural convection is available in the general heat transfer references.

其他自然对流信息可查阅一般热传递参考资料.

The results show that heat losses due to conduction, natural convection and radiation decrease the performance of solar thermoelectric device greatly.

结果表明，热传导损失、自然对流热损失和热辐射损失对太阳能热电装置的性能有显著的负面影响，并增加聚光和装置冷却的难度。

Numerical investigation on natural convection in an enclosure with discrete heat sources

矩形空腔内多个离散热源自然对流的数值分析

Natural convection heat transfer in a horizontal enclosure filled with anisotropic porous media is numerically studied by applying the Brinkman model-a modified form of Darcy model giving consideration to the viscous effect.

本文应用Darcy模型的改进型式－Brinkman模型数值研究了填充各向异性多孔介质的水平空腔内部自然对流的非达西效应。

The problem of natural convection flow and heat transfer in a cavity has extensive applicative background in application engineering, such as heat shield of building, safe design of nuclear reactor, microelectronic device cooling etc, so it is noticed more and more widely.

封闭腔内自然对流换热问题在工程实际问题中有着广泛的应用背景，例如建筑物隔热、核反应堆安全设计、微电子设备的冷却等，因而日益得到广泛的注意。

Natural convection can affect the heat transfer coefficient in the presence of weak forced convection.

自然对流可能影响前面所述的弱强制对流热传递系数.

Existence Conditions and Equations of Similarity Solutions for Vertical Natural Convection Flows Induced by Buoyancy and Mass Diffusion From a Vertical Plane Group Theory Analysis for Laminar Natural Convection Flows from a Vertical Flat Plate

垂直平板由于热浮升力和质量扩散引起的自然对流方程组存在相似性解的条件和相似性解方程垂直平板层流自然对流的群论分析

Basic principle for the enhancement and control of natural convection heat transfer under ideal magnetic field is analyzed. It is found that the effective convection heat transfer enhancement and control can be accomplished by appropriate arrangement for magnetic field.

分析了理想磁场作用下自然对流换热强化与控制的基本原理，指出通过合理的空间磁场布局可使自然对流换热过程得到有效强化或控制。

A time-dependent primitive variables numerical method for solving the natural convection and heat transfer in an enclosure

原始变量时间推进法计算封闭腔内自然对流换热

A Study on Inner Temperature Field of Aero-engine Control Unit Cooled by Natural Convection with PCB

插板式自然冷却航空发动机控制器内部温度场分布研究

The embankment model was built, and the thermo-mechanism was studied to protect permafrost by the effects of Balch and natural convection in the coarse gravel layer.

根据粗砾石的Balch效应和级配改良粗粒层自然对流效应，分析级配改良结构性路基保护多年冻土的热学工作机制；

The process of frost formation on horizontal aluminum surface in natural convection was experimentally studied.

实验研究了自然对流时水平铝表面上的结霜现象.

The result shows that heat loss of heat conduct, natural convection and heat radiation decrease the exergy efficiency of the thermoelectric device greatly.

结果显示，热传导损失、自然对流热损失和热辐射损失对太阳能热电装置的（？）效率有显著的负面影响。

Convection can be of two types: natural convection and forced convection.

对流可分为两类, 即 自然对流和强制对流.

Great temperature gradient brought the thermal stress in un-reacted solid particles, and natural convection and thermal pulse in the melted aluminum. When the thermal stress was higher than its maximum strength of the reactant, the reactant would be broken and the reaction speed was increased.

大的温度梯度在未反应固体内部产生热应力，当该热应力大于当时固体反应剂的极限强度时，会导致未反应固体的破裂，由此加速反应进程；

Measurement of the Temperature Field Around a Radiator in Natural Convection Heat Transfer by Four-Beam Holographic Interferometry

四光束全息干涉法测量散热器自然对流下的气体温度场

With the rapid development of the micro-electronics and micro-processing technology, the enhancement and control of the natural convection heat transfer are receiving increased attentions. However, the currently existing techniques focus mainly on the design and optimization of the heat transfer surface for natural convection.

自然对流换热的强化与控制随着微电子和微加工技术的快速发展受到越来越多的关注和重视，但现有技术主要集中于自然对流换热表面的结构设计和优化。

The results show that a distinctive augmentative effect on natural convection is observed with acoustic cavitation, and cavitating intensity and orientation are important factors affecting natural convection enhanced by acoustic cavitation.

研究结果表明：声空化对自然对流传热有显著强化作用，空化强度及空化方向是影响声空化强化自然对流传热的重要因素。

Temperature Distribution of Defect Surface and Effect of Natural Convection on Thermographic Inspection

缺陷表面温度分布及空腔自然对流对红外检测的影响

In the reactor, the cooling process is a complicated process, not only because of the natural convection which is caused by the temperature difference with the volume heat source, but also the bubble drived flow by the fission gas.

在医用溶盐池中，溶液的冷却过程不仅涉及到由于内热源加热产生的温度差而引起的自然对流，而且涉及到池内裂变气体引起的气泡驱动流。

Study on the Temperature Drop Process of Freight Car Bearing under Natural Convection

自然对流情况下的货车轴承温降过程研究

However, when temperature gradients are collinear with the centrifugal force, conditional natural convection induced by gravity, centrifugal and Coriolis forces in porous medium will occur. Furthermore, gravity and Coriolis forces have no effect on the stability criterion of natural convection.

当离心力与温度梯度平行时，多孔介质中将发生离心力、重力与哥氏力共同驱动的有条件自然对流，并且重力与哥氏力对自然对流的稳定性判据均无影响。

Visualization experiments for natural convection of horizontal air layer heated from below

底部加热空气层自然对流的可视化实验研究

Holographic tomography for measuring thermal field in natural convection of air

气体作自然对流时温度场测量中的全息层析技术

The heat transfer in natural convection is generally much lower than in the forced convection.

自然对流的热传递一般明显比强制对流形式弱.

Specially it is not obvious under lower Rayleigh number effect, and under high Ra number, the natural convection heat transfer in the enclosure is stronger.

特别的，在低瑞利数下增强效果不明显；在高瑞利数下，腔体内自然对流换热增强较显著。