Simple solar dryers, constructed from a wooden frame covered with plastic, let the light in, keep insects out and use natural convection.
这种简单的太阳能干燥装置是用一种覆盖了塑料膜的木架制成的，能够让阳光进入但是挡住了昆虫，而且还利用了自然对流。
Large temperature and concentration differences taking place in CVD process lead to natural convection and concentration diffusion which interact with forced convection and complex reactor geometries.
在CVD过程中，存在着大的温度差和浓度差，将引发自然对流和浓度扩散，它们又与气体的强迫流动以及反应器的几何尺寸和形状相互影响。
This paper has analysed theoretically the natural convection heat transfer in the HFETR core.
本文对堆内自然对流放热进行了理论分析。
Natural convection around a horizontal, isothermal cylinder in an infinite, fluid-saturated porous medium is modeled analytically using the Darcy flow model.
本文运用达西流模型，对饱和含湿多孔介质中环绕水平等温圆柱发生的自然对流进行了数值模拟和分析。
There is no buoyancy and natural convection at microgravity condition, which will affect the fundamental process of combustion.
在微重力条件下不存在浮力和由其引起的自然对流，从而影响了燃烧基本过程。
Numerical results show that natural convection is strong on the top of the melting region and angle between melting interface and horizon increases with melting time.
数值结果表明，在融化区上部发生较强烈的自然对流，融化界面与水平线倾角随融化时间越来越大。
We studied the natural convection in narrow double-side heating arc by mock-up tests and numerical simulation in this thesis.
本文对双面加热的圆弧形窄缝通道内重水的自然对流进行了模化试验和数值模拟。
The computation of natural convection in the annulus between horizontal concentric cylinders using spectral element method in polar coordinates is presented in this paper.
提出了将谱元方法应用到极坐标系下，利用极坐标系下的谱元方法求解环形空间内自然对流问题。
Based on volume averaging theory, natural convection model for melting phase change in porous media was established.
根据体积平均理论，建立多孔介质中融化相变过程自然对流模型。
By means of natural convection air-cooling burner spray and auxiliary ports installation, the load regulation range of the atmospheric burner with single port is extended.
通过采用空气自然对流冷却喷头、设置辅助火孔的方法，扩大了单火孔大气式燃烧器的负荷调节范围。
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。
The tank is cylindrical with certain height, which can make fermenting liquor natural convection form top-down or bottom-up, is advantageous in temperature control.
罐身为圆筒形，具有相当高度，可以使发酵液形成自上而下或自下而上地自然对流，有利于麦汁发酵液温度控制。
This paper deals with the natural convection temperature field of unlimited heated Plate with schlieren shearing interferometry of double frequency gratings.
用双频光栅纹影剪切干涉法对无限热平板的自然对流温度场进行诊断。
Then, the vector potential and vorticity equations and the method of the false transient are applied to compute the three-dimensional viscous natural convection.
然后利用矢量势和涡方程以及人工瞬变方法计算封闭腔中水的三维粘性自然对流。
The magnetic Kelvin force generated by a superconducting magnet system can damp the natural convection during crystal growth and thus the crystal quality can be improved.
超导磁体系统产生的磁场力可抑制晶体生长过程中的自然对流，从而提高晶体结晶质量。
The numerical simulation of the velocity field and temperature field of the natural convection in porous medium with a trapezoid space was conducted.
本文对填充有多孔介质的梯形空间内的自然对流的流场和温度场作了数值计算。
A numerical study is carried out for the combined heat transfer of turbulent natural convection and surface radiation in an two-dimensional open square cavity with only one heated wall.
对具有单个加热壁的二维方形开口空腔内的湍流自然对流与表面辐射的耦合传热进行了数值研究。
It is discovered that the natural convection gas has the pendulum characteristic.
发现了密闭腔中自然对流气体有摆现象。
Numerical analysis is made for the unsteady and steady, two-dimensional laminar natural convection in an enclosure caused simultaneously by the external heating and a local internal heat source.
本文描述由一个局部内热源和外部加热同时作用引起的封闭空腔内非稳态、二维、层流自然对流换热的数值分析结果。
Three-dimensional physical and mathematical models for the coupled heat transfer of natural convection in a liquid pool with heat source and forced convection in cooling coil tube are established.
建立了含内热源的液池内自然对流与冷却盘管内强制对流耦合传热的三维物理、数学模型，进行了相应的数值模拟计算。
Solidification and melting process are studied separately with different considerations such as the effects of core and natural convection. Valuable results were gotten.
数值求解中，对凝固过程与熔化过程加以分别考虑，考虑了诸如蕊芯的影响及自然对流效应等因素，所得结果具有实用价值。
It is discovered that the natural convection gas has the pendulum characteristic, so the new concept of gas pendulum is presented.
根据自然对流气体具有摆的特性，从而提出气体摆新概念。
The results of visualization experiment show that temperature and flow fields are un-steady and three dimensional in space for this natural convection of horizontal air layer heated from below.
实验结果表明，这种水平空气层自然对流换热是非稳态的，并且在空间上是三维的。
The effect of variable properties on natural convection heat transfer in horizontal concentric circular annulus was studied.
研究了变物性对水平同心套管夹层中自然对流换热的影响。
The application of virtual instrument in the natural convection experiment of horizontal pipes fixed in a large space.
虚拟仪器在大空间水平管自然对流传热实验中的应用。
The results show that natural convection can be formed on condition that the body force acting on the fluid is a non-conservative one.
结果表明：只要流体所受体积力为非保守力，即可产生自然对流。
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。
Natural convection, natural wind and sun radialization bring the change of temperature. The most important factor is natural wind and sun radialization.
碎块石护坡和路基内的温度场受到自然对流、强迫对流和太阳辐射的影响，其中最主要的影响因素是强迫对流和太阳辐射。
And to avoid disasters similar to Fukushima, where the pumps used to circulate the water failed, the miniature reactor will use natural convection.
为避免日本福岛核泄漏那样的灾难，若水循坏的水泵发生故障，微型核反应堆会使用天然对流。
And to avoid disasters similar to Fukushima, where the pumps used to circulate the water failed, the miniature reactor will use natural convection.
为避免日本福岛核泄漏那样的灾难，若水循坏的水泵发生故障，微型核反应堆会使用天然对流。
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