aerodynamic configuration

The comparison of the variation of bubble shape and volume during bubble growing process between the two kinds of solutions was made.

采用激光成像结合CCD摄像技术分别对牛顿及非牛顿流体(甘油和羧甲基纤维素钠水溶液)中的气泡生成行为进行了研究,对2种流体气泡生成过程中气泡形状和体积变化进行了比较。

The results for single bubble show that, in low-viscosity liquids, the bubble shows large distortion and oscillation, the bubble shape changes from the spherical shape to the irregular ellipsoid and the bubble rising trajectory changes from a rectilinear path to a zigzag or spiral path as the bubble equivalent diameter increases.

对单个气泡的研究结果表明,在低黏度液体中,随着气泡直径的增加,气泡振荡形变剧烈,气泡形状由球形向类似椭球形的不规则形状转变,上升轨迹由直线形向之字形、螺旋形转变;在高黏度液体中,随气泡直径的增加,气泡形状逐渐由球形向呈球帽形转变,气泡的周期性振荡趋于平缓,纵横比增大,气泡上升速度降低。

The bubble shape and rise velocity predicted by the simulation agree well with a well-known bubble regime diagram in the literature.

针对Eo数从O(0)～O(2),Mo数从O(11)～O(2)的流动范围,重点研究了上升气泡的形状特性,并与经典的气泡形状图谱进行了比较。

This paper aims to study the relations between the stomatic shape and evalution of peaches.

为探讨桃叶片气孔形状与桃属植物进化的关系,以桃亚属6个种139份材料为试材,观察了桃树叶片气孔形状和大、小气孔的分布。

Dependence of Image Resolution on the Air Hole Shape for 2D Photonic Crystal Slab Lens

二维光子晶体的空气孔形状对负折射平板透镜成像分辨率的影响

Influence of Air-film Hole Shapes on Turbine Blade Air-film Cooling Effectiveness

气膜孔形状对涡轮叶片气膜冷却效果的影响

Research on Automatic Measurement System of Form Error of the Valve Internal Hole

阀套内孔形状误差气动测量系统的研究

Numerical Study on the Influence of Hole's Shape on Film Cooling Efficiency

气膜孔形状对冷却效率影响的数值研究

Deformation behaviors and constructive relation of lotus-type porous copper under compressive direction perpendicular to pores

藕状多孔铜沿垂直于气孔方向的压缩变形行为与本构关系

The forming condition of crystal and closed pore in tabular alundum produced with electric melting is estimated and determined theoretically.

从原理上判断和估计了电熔板状刚玉结晶体和阔气孔的形成条件。

Numerical Simulation of Steady and Unsteady Flows Near Film Cooling Holes with Different Shapes;

不同形状气膜冷却孔附近定常和非定常流动的数值模拟

circular perforated air diffuser

环形穿孔空气扩散器

multicellular glass in blocks, panels, plates, shells or similar forms

多孔玻璃,呈块状、板条状、平板状、壳状或类似形状

Deformation of Porous Pad of an Aerostatic Porous Thrust Bearing

空气静压多孔质止推轴承多孔质圆板的变形

Influence of Aperture Shape on Extraordinary Transmission Through Periodically Perforated Metal Films

孔阵形状对周期孔阵金属薄膜透过率的影响

Characteristics of vertical sharp-edged orifice discharge(Ⅲ) Effect of geometry on orifice discharge coefficient

垂直锐边孔口的自由出流特性(Ⅲ)孔几何形状对孔流系数的影响

A volcanic rock containing many amygdules.

杏仁岩有很多杏仁状小气孔的火成岩

Relationship between Chromosome Ploidy and Stomatal Characters of Leaf in Pepper

辣椒染色体倍性与气孔性状的相关性

Blowhole Formation Reason of Cylinder Head and Process-Improving Measures

缸盖气孔形成的原因与工艺改进措施

A Study on Distortion of Diesel Cylinder by Using FEA

有限元分析柴油机气缸孔变形的研究

Prevention of Linear Porosity in EGW for Large Storage Tank

大型储罐气电立焊条状气孔缺陷的预防

Forming Principle of and Countermeasures to Blowhole in Cylinder Head of High Strength and Thin Wall

高强度薄壁灰铸铁气缸盖气孔形成机理与对策