对流

On the basis of a two-dimensional model, we calculated the field of temperature.

密闭腔体中温度场的变化是自然对流的结果。

Nitta T Unusual summer weather over Japan in 1988 and its relationship to the tropics J.Meteor.Soc.Japan , 1990,null

黄荣辉%孙凤英热带西太平洋暖池的热状态及其上空的对流活动对东亚夏季气候异常的影响大气科学， 1994，2

The allocation of lower level convergence and upper level divergence was favorable to the maintenance of strong updrafts , and the moisture and energy carried by the updrafts was in turn favorable to the genesis and development of convective cloud cluster .

(2)低层辐合，高层辐散的高低空配置有利于强上升运动的维持，强上升气流所携带的水汽和能量有利于对流云团的发生发展，有利于暴雨的维持。

For convection-dominated diffusion problems, because the diffusive coefficient is very small, it is expected that the new upwind schemes in this section can get very high computational accuracy.

对于对流占优扩散问题，由于扩散系数比较小，可以期望，本节所给的新型迎风格式能够达到比较高的计算精度。

To avoid numerical diffusion caused by convection-dominated effect, the streamline upwind is introduced to modify the weighted function.

在有限元方程离散过程中，针对流动对流占优的问题，引入对权函数的流线迎风修正，有效地消除了高雷诺数流动计算中的数值震荡。

It is shown that under certain condition the convection may also develop in a stable stratified atmosphere, because the ambient wind field and stratification variate with the development.

分析结果指出，对流除在不稳定和中性稳定层结条件下可以发展外，在稳定层结条件下也可以得到发展，并且扰动的振幅最后均趋于有限值。

The method is firstly applied to solve the linear convection-dominated diffusion problems and the optimal L2-error estimates of the unknown function c and the vector flux p are gained.

此方法首先被用于求解线性对流扩散问题，得到了关于未知函数c及伴随函数p的最优L~2误差估计。

The numerical solution shows that the optimal velocity field for laminar convective heat transfer in tubes is multi-longitudinal vortex flow.

数值求解表明，管内层流对流换热的最优速度场为多纵向涡流态。

In this paper, the mathematical model and the numerical simulation method of hydrodynamic problems, including the calculation of moving free surface and other boundary conditions for the viscous incompressible flow with free surface, were investigated.

这就需要对流场的数值计算方法进行比较深入的研究。本文对具有自由水面的不可压粘性流动问题的数学模型、数值计算方法、自由表面及其它边界的处理等问题进行了深入的研究。

The observatory said the relatively strong localized convection led to the formation of the waterspout.

天文台表示，是相对强烈的地区性对流活动，导致了此次水龙卷的形成。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。