查询词典 convection

In order to quaintly study the dynamic changeable law of reactive oil contaminants in sand-water system, hydrodynamic parameters for water and salt movement and reactive hydrodynamic parameters are measured through hydrodynamic dispersion test and one dimensional convection and dispersion model.

为了定量地研究滩涂－水系统反应性石油污染物的动态变化规律，通过水动力弥散实验和一维对流、弥散模型确定了水分和溶质在滩涂－水系统的水－盐动力学参数和反应动力学参数。

Perturbation source forced by convection can produce waves propagating cyclonically, which makes eyewall and spiral rainband enclose eye.

西北侧对流作为扰源，激发波动沿逆时针方向传播，使得眼墙与螺旋雨带逐渐趋于闭合，包围形成较为完整的眼区结构。

Satellite imagery is a good tool at present, this paper analysis satellite imagery and summrize feature:use a few simple sentences:aa marked decrease of deep cloudiness and rainband outside the inner core in the western quadrant,the result is an asymmetric appearance of clouds and deep convection compared to the moresymmetric structure during the mature stage of tropical cyclone.

同时对云图上的特征分析总结，分析结果表明：(1)云图上看：热带气旋变性。用几个简单的语句依次概括为：a云和深对流在东西两边的非对称性，并伴随着南边的"干缝"出现。b北边和西边"盾状"卷云的出现c台风眼墙消失产生"干缝"，冷暖锋的出现。

The heat flux distribution of radiation and convection along the width and height of furnace in superheater and reheater zone is obtained By comparison, it can be seen that, although there is deviation between the calculation and measurement results, they are identical qualitatively.

过热器和再热器汽温分布的模拟计算结果与现场实测值进行了比较，两者在定量上尚存在一定的差距，但定性上基本一致。

In order to investigate the influence of surface tension gradient driven convection on solidification behavior of alloys under microgravity, remelt and solidification of Al-Al〓Ni eutectic alloys, which have characteristics of directional growth along temperature gradient, were carried out on board Chinese retrievable satellite.

利用我国返回式科学实验卫星搭载的梯度炉和Al-Al〓Ni共晶合金定向生长的特点，研究了与重力无关的表面张力驱动对流（Marangoni对流）对合金凝固行为的影响，在空间微重力下获得了弯曲的双涡放射状共晶组织。

In order to study the numerical method to solve the viscous incompressible flow with free surface, the 3-D mathematical model for steady and unsteady hydrodynamic problem had been established and closed by k-εbuoyant turbulence model. The algebraic coordinate transformation method was used to fit the free surface, the Runge-Kutta method of three step and second precision was devised to simulate the time step. A high precision up-winding compact scheme was studied for the convection term, and the generalized conjugate residual method was set to solve the Poisson equation.

为了研究粘性不可压缩三维问题的数值求解方法，本文从基本的Navier-Stokes方程出发，采用代数拟合方法处理自由表面，用三级二阶Runge-Kutta方法对时间步进过程进行了模拟，并且对对流项的高精度迎风格式进行了研究，给出了求解压力Poisson方程的广义共轭剩余法，从而建立了能够模拟有自由表面的粘性不可压缩问题的定常、非定常三维水动力学模型，并采用k—ε浮湍流模型对其进行封闭。

It was shown that the effect of thermal insulation and natural convection could be occurred in crushed rock layers of revetment.

研究结果表明，块石护坡结构具有隔热保温和空气自然对流效应。

Road engineering ; ballast embankment and revetment ; experimental research ; porous media ; natural convection ; thermal conductivity parameter

道路工程；块石路堤、护坡；试验研究；多孔介质；自然对流；导热系数

Insulation: with proper installation method, in the tile roof and between the formation of a layer of air layer, convection heat.

隔 热：配合适当的安装方法，在瓦体与屋面之间形成一层空气层，对流散热。

When the saturated vapor of pure R11 or R113 was condensed on the PF tubes under free convection conditions, the HTCs (based on the outside area of the base tube, the same be1ow) were 14 to 20 times those of the smooth tube because the condensate surface tension made the condensate film on fin surfaces thin and the rough saw-toothed fin surfaces disturbed the boundary layer in the condeneate film.

纯R11、R113的饱和蒸气在大空间花瓣形翅片管上冷凝时，由于凝液的表面张力将翅片表面上的液膜拉薄以及粗糙的锯齿形的翅片表面扰乱了凝液膜内的流动边界层，传热膜系数（以坯管外表面积为基准，下同）是光滑管的14—20倍。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。