粗糙带

粗糙带对某型号飞机简化模型机头流态的影响

Effects of Roughness Ribs on Flow Patterns of Simplified Aircraft Model

粗糙带对细长体大迎角流动非对称性的影响

Effects of grit strip on flow asymmetry over a slender revolution body at high angles of attack

我都十分粗糙带的设计和手头上所有的测量。

I have attached a rough design of the band and have all the measurements on hand .

实验的湍流度为：0.02%，0.10%和0.33%。实验结果表明，不同的粗糙带对模型的气动特性有较大的影响。

The flow turbulence levels used in this test were 0.02 % , 0.10 % and 0.33 % .

环型粗糙带可以改善模型表面的分离状态，但是却增强了流动非对称性；

A " ring " type of grit can improve the flow separation state on the model surface but enforces the flow asymmetry ;

结果表明：条型粗糙带可以有效改善流动非对称性、降低当地侧向力；

The results indicate that a " strip " type of grit can reduce the local side force and effectively improve the flow asymmetry ;

碾磨粗糙的带皮玉米粉，在美国南方煮粥做早餐。

Coarsely ground hulled corn boiled as a breakfast dish in the southern United States .

请将这粗糙的食物带去给他。

Please take my humble alms food to him .

实验得到了通过增加叶片局部粗糙度提高风机效率的粗糙带最佳宽度及其位置，并对不同的粗糙度对效率的影响进行了初步的探讨。

The roughness band position and coiled width are obtained , which can improve the fan efficiency .

最后，对风力机专用叶型进行的叶片表面局部增加粗糙度的风洞实验，结果证明了在叶片压力面尾缘通过适当增加一定宽度、一定粗糙度的粗糙带可以增大叶片的有效升力系数。

Finally , the results proved that increasing the roughness of the wind turbine blade airfoil trailing edge can improve the lift coefficient and lift drag ratio coefficient in some condition .