发现了密闭腔中自然对流气体有摆现象。
It is discovered that the natural convection gas has the pendulum characteristic.
本文对堆内自然对流放热进行了理论分析。
This paper has analysed theoretically the natural convection heat transfer in the HFETR core.
对流可分为两类，即自然对流和强制对流。
Convection can be of two types: natural convection and forced convection.
这为自然对流的控制提供了一定的理论依据。
空气在横管外自然对流是对流和辐射的复合传热。
Air natural convection around horizontal pipe is a compound heat process of convection and radiation.
虚拟仪器在大空间水平管自然对流传热实验中的应用。
The application of virtual instrument in the natural convection experiment of horizontal pipes fixed in a large space.
以条宽为特征量，得出了竖窄条自然对流换热关系式。
The relational expression of natural convective heat transfer of isothermal vertical strip was found.
本文用激光全息干涉法研究了水平椭圆管的自然对流放热。
Holographic interferometry has been used to study the heat transfer by free convection from horizontal elliptic cylinder.
根据自然对流气体具有摆的特性，从而提出气体摆新概念。
It is discovered that the natural convection gas has the pendulum characteristic, so the new concept of gas pendulum is presented.
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 effect of variable properties on natural convection heat transfer in horizontal concentric circular annulus was studied.
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 temperature boundary layer of a natural convection along a vertical heated plate is measured quantitatively.
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。
Based on volume averaging theory, natural convection model for melting phase change in porous media was established.
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。
The results show that natural convection can be formed on condition that the body force acting on the fluid is a non-conservative one.
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。
This paper deals with the natural convection temperature field of unlimited heated Plate with schlieren shearing interferometry of double frequency gratings.
计算结果表明，高温钢水在中间包内流动时，不能忽略自然对流流动；
The calculated results show that the natural convection shouldn′t be neglected for molten steel flowing in tundish because of heat loss.
实验结果表明，硬脂酸锌粉粒是显示空气自然对流流动的比较理想材料。
Zinc stearate particles has proved out to be a good trace material for visual display of natural convection flow pattern in enclosure.
基于测量结果讨论了大型腔体中因射流与自然对流传热所造成的速度场。
The flow field inside the large enclosure is discussed based on the measurements.
实测了水平肋片管在自然对流换热条件下圆管表面温度在圆周方向上的分布。
This paper offers the measured distribution of the surface temperature of horizontal finned tube along the circumference in natural convection heat transfer.
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。
There is no buoyancy and natural convection at microgravity condition, which will affect the fundamental process of combustion.
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。
The numerical simulation of the velocity field and temperature field of the natural convection in porous medium with a trapezoid space was conducted.
用数值方法分析了开口空腔中的湍流自然对流与表面辐射相互耦合的复杂传热。
The complex heat transfer of turbulent natural convection combined with surface radiation in open cavities is analyzed by numerical method.
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。
Then, the vector potential and vorticity equations and the method of the false transient are applied to compute the three-dimensional viscous natural convection.
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。
We studied the natural convection in narrow double-side heating arc by mock-up tests and numerical simulation in this thesis.
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 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.
冰箱板管式冷凝器传热问题属于典型的带离散热源非均匀壁温竖板自然对流传热问题。
The wrapped-type condenser of a refrigerator can be considered as a typical vertical plate with discrete heat sources and uneven temperature distribution when the pipe temperatures are known.
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 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.
讨论了对流扩散方程的第二逆风差分格式的一些性质，并说明了在自然对流计算中的某些问题。
Discusses some properties of the second upwind difference scheme for the convection-diffusion equation and explains certain questions in the computation of natural convection problems.
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。
The computation of natural convection in the annulus between horizontal concentric cylinders using spectral element method in polar coordinates is presented in this paper.
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。
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。
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.
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