风洞

All computations were executed with finite volume analysis in single computational domain,and hexahedron map mesh is applied in triangle and scallop riblet,and tetrahedron free mesh is applied in blade one.B-L two layers model and Reynolds stres...

三种沟槽具有相同的特征尺寸，顶点间距s=0.1mm，沟槽尖顶到谷底高度h=0.05mm，与光滑表面相比减阻效果分别为3.2%、9.1%、9.7%，数值计算结果和风洞与油槽实验结果有较好的吻合。

The mean velocity distributions in turbulent boundary layers of smooth surface and two different riblet surfaces are measured with IFA300 constant-temperature anemometer in low-speed wind tunnel to validate the full development of turbulent boundary laye. Friction velocity and wall friction stress of turbulent boundary layer are obtained with the least-squares fitted curve of the sublayer velocity distribution based on Spalding formula, and virtual origin position of riblet surface can be acquired accurately.

在低速风洞中来流速度一定的情况下使用IFA300恒温热线风速仪测量了光滑表面和两种不同尺寸的脊状表面湍流边界层平均速度分布剖面，并验证了试验段湍流发展的充分性；通过应用Spalding壁面公式使用最小二乘法精准拟合了实验测量的边界层内层速度分布曲线，得到了湍流边界层壁面摩擦速度并进一步求得湍流壁面摩擦应力，较准确地计算出脊状表面的虚拟原点位置，并通过与对数律公式拟合结果比较分析，证实了该方法更加准确有效。

A new cable model system with a movable artificial rivulet is designed and tested in a wind tunnel.

设计了一种新型的带有可运动人工水线的拉索模型，并进行了风洞试验。

In this paper,a cable model with artificial rivulet has been tested,and the test results are presented.

进行了粘贴人工水线的斜拉桥拉索模型的风洞试验，并给出了结果；建立了拉索风雨激振的力学模型，并分析了拉索风雨激振的动力特性和各个参数的影

Using the program the wind fields around several buildings with different body shapes are analyzed. The final results of grid division and refinement are presented. The final wind velocities around the building and wind pressures on the building surface are obtained and also compared with those from the wind runnel test.

采用计算程序对几种不同体型建筑物的流动风场进行了模拟计算，给出了计算区域的网格剖分和加密结果，获得了离散后的流场的风速和风压模拟结果，并与风洞试验结果进行了比较。

The comparative experiments of the new active sand trap with a traditional passive one are carried out fl a wind tunnel, where a new non-dimensional parameter is introduced to evaluate the stagnant effect on airflow of the trap.

对新型集沙仪和传统被动集沙仪进行了风洞对比实验，并引入一个新的量来反映集沙仪对气流的阻碍程度。实验结果显示，新型集沙仪对气流的阻碍明显减小，在不同风速下也具有很好的适应性。

The experiment result showed that motor designed by the method sati...

实验结果表明，使用该方法设计的电机满足了风洞实验要求，具有较高的性价比和较强的工程应用价值。

The top of the shapeless bay into which this door shut was masked by a narrow scantling in the centre of which a triangular hole had been sawed, which served both as wicket and air-hole when the door was closed.

在那不成形的门框上端，有一块狭窄的薄木板，板的中间，锯了一个三角洞，那便是在门关了之后的透光洞和通风洞。

The top of the shapeless bay into which this door shut was masked by a narrow scantling in the centre of which a triangular hole had been sawed, which served both as wicket air-hole when the door was closed.

在那不成形的门框上端，有一块狭窄的薄木板，板的中间 www.8ttt8.com ，锯了一个三角洞，那便是在门关了之后的透光洞和通风洞。

The model was connected directly to the nozzle exit of shock tunnel as the test section. Schlieren photography was used to visualize the flow flield.

模型发动机作为试验段直接连在激波风洞的喷管出口处，采用纹影照相显示流场。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失