Oscillatory Drag, Lift, and Torque on a Circular Cylinder in a Uniform Flow

摘要: Numerical solutions of the equations governing time‐dependent, viscous, incompressible fluid flow past a circle are presented for Reynolds numbers 100, 400, and 1000. These show dramatic rise drag coefficient during development Karman vortex street reveal oscillatory character drag, lift, torque that experienced by circle. Contour plots vorticity stream function compared with histories pressure distribution, torque, separation angles. comparisons how on intimately logically related to well‐known pattern street. A new method is described implementing infinity conditions. The use this technique makes it possible observe motion upstream stagnation streamline relate effect lift fact larger wake than symmetric interpreted as tendency toward an equilibrium state maximum energy dissipation. Comparisons made experimental results. suggest present results valid description circular cylinder in range from 40 400.