The forced reattachment of the separated shear layer of a circular cylinder with tangential blowing.
The forced reattachment of the separated shear layer of a circular cylinder with tangential blowing.
复制标题
通过切向吹气强制重新附着圆柱体上分离的剪切层。
DOI：
10.1299/kikaib.53.1704
复制
发表时间：
1987
期刊：
影响因子：
--
通讯作者：
F. Yoshino
中科院分区：
文献类型：
--
作者：
Ryoji Waka;F. Yoshino
对圆柱体在不同吹气位置下切向吹气的气动特性进行了实验研究。在吹气位置处于分离区的情况下，通过吹气射流的吸力作用，使分离的剪切层重新附着到圆柱体表面。根据吹气位置的不同，在某一喷流强度下突然发生再附着，并导致气动特性的不连续变化。在层流剪切层的情况下，增加雷诺数和湍流强度可以有效地促进强迫再附着，而在湍流剪切层的情况下，雷诺数和湍流强度的增加对强迫再附着的促进作用不明显。
An experiment was carried out on the aerodynamic characteristics of a circular cylinder with tangential blowing for various blowing positions. In the case that the blowing position is in the separated region, the separated shear layer is forced to reattach to the cylinder surface by the suction effect of the blowing jet. The reattachment takes place suddenly at a certain intensity of the jet depending on the blowing position and results in a discontinuous change of the aerodynamic characteristics. The forced reattachment is effectively promoted by increasing the Reynolds number and the intensity of turbulence in the case of a laminar shear layer but is independent of them in the case of a turbulent shear layer.