On the Wake and Drag of Bluff Bodies
作者： ANATOL ROSHKO
DOI: 10.2514/8.3286
关键词: Characteristic velocity 、 Mathematical analysis 、 Mechanics 、 Potential flow 、 Dimensionless quantity 、 Cylinder (engine) 、 Drag 、 Pressure coefficient 、 Wake 、 Mathematics 、 Kármán vortex street
摘要: A modification to Kirchhoff's free streamline introduces the parameter k = √(1- C_ps), which allows arbitrary base pressure and must depend on dynamics of wake. For a cylinder given cross-sectional shape, drag, C_D, wake width, d', are functions only. These used relate C_D dimensionless shedding frequency , S nd/U_ ∞ another number, S* nd' / U_s, is based parameters. It found that 0.16 for all cylinders. In approach, evaluated by using Karman's solution vortex street.
core.ac.uk
sci-hub.se 参考文章(4)
Anatol Roshko, On the development of turbulent wakes from vortex streets PhDT. ,(1953) , 10.7907/4WDN-9807.
On the flow of air behind an inclined flat plate of infinite span Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences. ,vol. 116, pp. 170- 197 ,(1927) , 10.1098/RSPA.1927.0130
D. Riabouchinsky, On Some Cases of Two-Dimensional Fluid Motions Proceedings of The London Mathematical Society. pp. 185- 194 ,(1926) , 10.1112/PLMS/S2-25.1.185
Discontinuous fluid motion past circular and elliptic cylinders Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences. ,vol. 102, pp. 542- 553 ,(1923) , 10.1098/RSPA.1923.0014