查询词典 convection current

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。

By means of the Schlieren technique,Schlieren images of the natural convection were taken in CO_2-ethanol absorption system.

利用纹影仪光学方法，获得了乙醇吸收CO2过程中自然对流的纹影图像；并通过吸收传质流体CFD模型，应用有限元方法对气液吸收过程中出现的自然对流发生过程进行了数值计算，得到了液相自然对流发生时的非稳态流场分布和浓度分布信息。

Natural convection ; absorption ; Schlieren device ; finite-element method ; numerical simulation

自然对流；吸收；纹影仪；有限元；数值模拟

Further, the bifurcation diagram and the contour maps of vertical velocity field, streamlines, temperature field, concentration field and sideview shadowgraph intensities corresponding to the convection patterns of three Rayleigh numbers along the bifurcation upper branch were given.

进一步，我们给出了分叉曲线及其沿分叉曲线的上部分支三个Rayleigh数对应的对流图案的垂直速度场，流线，温度场，浓度场和Shadowgraph强度的等值线图。

In this paper, the phase-field models coupled with force flow, shear flow and nature convection are introduced respectively.

阐述了相场方法是凝固过程中对流效应数值模拟的有效方法，分别介绍了考虑强迫对流、剪流、自然对流的相场模型，综述了相场方法在对流领域研究中的应用情况，指出了该研究领域目前存在的问题及今后的发展方向。

In this model, not only natural convection that is caused by different vertical density, and the baffle effect of shearing stress caused by viscosity is considered, but also the effect of concentration distinction itself to leaky flow is considered

该模型不仅考虑了由于密度差引起的自然对流作用，粘滞性产生的切应力对水流运动的阻滞作用，还考虑了溶质浓度的差异对越流的影响。

In the deformation analysis, equilibrium hyperelastic constitutive equations which are obtained by our experiments are applied; In the dissipation energy analysis, dissipation energy is calculated by combining the stress-strain distributions derived from the deformation analysis and viscous dissipation characters; In the heat transfer analysis, combining temperature on tire side tested by drum test, a numerical inverse method is described for determining the heat convection boundary on tire side.

变形分析中，采用了平衡态的超弹性材料模型；损耗分析中，依据变形分析获得的应力应变场，结合材料粘性损耗特性来获得损耗能量；热传导分析中，依据实测的轮胎胎侧温度场，提出了一种基于实验的数值反演方法来确定胎侧的对流热边界条件。

After the monsoon onset, the southwesterly monsoon transported the volume of warm and wet air to the SCS and the convection enhanced. So, the stratification was unstable and precipitation was also falling.

这主要是由于季风爆发后，西南季风把大量暖湿空气输送到南海地区，对流活动增强，大气呈现不稳定层结并伴有降水发生的结果。

Roller squeezer heating can be quartz tube or infrared tube, and also can equipped with convection system.

辊压加热可选石英管加热和中波红外辐射管加热，并可配备加热对流搅拌系统。

Firstly, this paper introduced the vector-convection discussed model of a squirrel-cage asynchronous motor. And the vector control system takes the model set up by Matlab/Simulink as its control object.

首先详细介绍了异步电动机矢量控制的原理及数学模型，并利用Matlab/Simulink软件构建了矢量控制系统的仿真模型。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。