对流的

And the energy balance equation is applied to describe the temperature field axial orientated.

对流道的径向瞬态温度场分布进行差分求解，对流道轴向的温度分布运用能量平衡方程建立数学模型，并采用松弛迭代求解；最后，考虑流动和冷却过程的温度场分布，对流道径向和轴向温度场的计算结果进行了耦合分析，解决了长期以来只能依靠经验计算热流道温度场的局限。

Thirdly, fuzzy control method and PID method were used respectively to design temperature self-adjustment controller of carbon fiber concrete laminate beam,by the MATLAB simulation it is found that the PID method has higher speed but is more sensitive to the fluctuation of system parameter ,it is suit to the regulating when the heat transfer coefficient fluctuates diminutively and the structure has little heat transfer with the environment;fuzzy control can be adapt to the parameter variety in a large scale , it is suit to the regulating when the heat transfer coefficient fluctuates greatly.

分别采用PID和模糊控制策略设计了温差自调节控制器，通过MATLAB仿真研究得出：PID方式具有更快的调节速度，但对系统参数变化较敏感，适合系统与外界对流交换较微弱，对流参数波动不大时的调节；模糊控制能够适应系统参数在较大范围内的变化，适合对流参数波动较大时的调节。

In heat transfer experiment under ambient temperature and pressure, the profile of heat transfer coefficient, and its relation with injection flow rate and downcomer flow rate are investigated.

通过常温常压下传热实验，获得了反应堆压力容器内对流换热系数的分布，对流换热系数与安注流速和下降环腔流速的关系，含气率对对流换热系数的影响。

In this paper a two-dimension square model of convection heat transfer is adopted and Field Coordination Equation is verified by comparing the heat transfer efficiency of optimal velocity filed and other flow fields.

过增元11，2指出速度矢量与热流之间的夹角是影响对流换热整体性能的一个重要因素，并阐述了对流换热场协同的基本概念：对流换热强化要求速度场和温度场之间相互协同，即彼此存在着最为合理的空间分布。

It was shown that winter-time natural convection in the fractured-rock embankment began to occur in the side slope portions and developed from two side slope portions to the middle portion of embankment with lowering of surface temperatu...

通过引入自然对流指数，分析了自然对流降温效应随路堤碎石层填筑厚度的变化规律，其可分为恒零区、急增区和缓变区3个阶段，急增区的起点和终点对应于路堤碎石层填筑的最小厚度和最大厚度。最后，利用自然对流指数具体计算了不同粒径碎石层填筑的临界厚度。

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。

By using the Eulerian-Lagrangian combined method, the convection-diffusion equation is spitted into the diffusion terms and convection terms. For convection terms, the implicit method of characteristics using time-line interpolation with high accuracy is adopted. While for the diffusion terms the conventional finite difference method is used.

采用欧拉—拉格朗日混合解法，将对流—扩散方程中的扩散项和对流项分裂求解，应用高精度时间序列插值的特征差分隐格式求解对流项，扩散项采用传统的有限差分法。

Evaluation shows that the method can separate most of the convective and stratiform cloud precipi...

试验表明，ACSS能较准确地实现对流性降水和层状云降水的自动分类，相对于只根据二维结构分类降水性能上有较大提高，主要表现在能正确识别出亮带特征明显的强层状云和对流核外沿的对流弱回波区。

In a same cloud band, the variation of temperature is small meanwhile the temperature is lower.The convective bubbles were observed in the warm clouds under the middle of the cumulostratus on 21,June 1992. The bubbles clearly show that they are one kind of mesoscale organization. It suggests that the synoptic system is situable to produce convective bubbles. Its contrastly analysed that the particle concentration and the liquid water content are higher.the particle spectra is similar,the particles captured by 2D-C probe are bigger in the bubbles.

1991年6月21日个例观测到对流泡位于层积云下部暖云中的部分，泡状结构明显，呈现出中尺度组织特征，天气系统的配置有利于垂直上升运动的发展：通过对比分析，发现对流泡内具有云滴浓度高、液态水含量较高、云谱型相似以及2D-C粒子尺度大等特点：本次个例观测到的对流泡内云滴谱表现为单峰型。

Evaluates the zero-equation model provided by Chen based on CFD simulation of three typical airflows(forced convection,mixed convection and natural convection)in air-conditioned and ventilated rooms.

为了对Chen提出的零方程模型进行评价，研究了三种典型的空调通风房间气流组织工况(强迫对流、混合对流和自然对流)，同时采用Prandtl的混合长度理论和双方程K-ε湍流模型的计算结果作为比较。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。