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1·A new method is described in this paper for boundary layer thickness control on the fixed ground plate in the wind tunnel.

本文介绍了一种风洞固定地板边界层厚度控制新方法。

2·This method can greatly decrease the boundary layer thickness on the floor, and maintain good characteristics and uniformity of the flow field.

这种方法使地板边界层厚度大大降低，而风洞仍保持好的流场品质及流场较均匀的特点。

3·The influences of porosity on the local blowing ratio, wall temperature and boundary layer thickness were compared with the effects with regenerative cooling.

对比再生冷却分析了不同注入率对壁面温度、冷却效率以及边界层厚度的影响；

4·The main factors of affecting boundary layer thickness were maximum Ts-Ta and wind speed, further that of Pingliang was also related to daytime precipitation.

影响边界层厚度的主要因子是最高地温差和风速，平凉还与白天降水量有关。

5·The analysis result of velocity distribution and boundary layer thickness is put forward in the boundary layer and cored region for laminar and turbulent flow of pipeline.

采用动量积分方法推出了管道流动中的速度边界层方程，给出了管道层流和紊流时速度边界层和核心区中的速度分布、边界层厚度的解析结果，并与冯。

6·Through large amount of lab experiments, the relation of oil boundary layer thickness with capillary radius, pressure gradient, fluid viscosity and its composition has been discussed.

通过大量的室内实验，探讨了原油边界层厚度与毛管半径、压力梯度、流体粘度和组分的关系。

7·The boundary layer thickness of the forward skewed rotor decreases in the top of blade due to reduction of the secondary flow loss. This fact conforms with experimental investigation.

得出了叶片周向前弯后， 叶顶部分的附面层减薄， 二次流损失减小的结论， 与实验结果吻合；

8·Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.

对于速度边界层提出了相似性解的解析结果，给出了速度分布、边界层厚度、摩擦阻力和水头损失的解析计算表达式。

9·The bump which is equal to the local boundary layer thickness in height can divert the boundary layer effectively. As a result, no obvious low total pressure zone is found at the outlet of the inlet;

进气道出口截面上未发现因附面层吸入而造成的低总压区，这说明高度与当地附面层厚度相当的进口鼓包能有效地隔除附面层中能量较低的气流；

10·When the relative gap height (the ratio of flap height to gap width) is in the range of 0 8-2 0, the mean pressure will reduced 30% if the flap height is smaller than the thickness of boundary layer.

底部相对间隙在0 8～ 2 0之间时，扰流片高度小于边界层厚度时的壁面平均压力比扰流片高度大于边界层厚度时小30 %左右。