Numerical Investigation of Counter-Rotating Vortical Gust Impingement Effect on a Rotating Cylinder

Drag and lift forces on a counter-rotating cylinder in rotating flow

Results are reported of an experimental investigation into the motion of a heavy cylinder free to move inside a water-filled drum rotating around its horizontal axis. The cylinder is observed to either co-rotate or, counter-intuitively, counter-rotate with respect to the rotating drum. The flow was measured with particle image velocimetry, and it was found that the inner cylinder significantly ...

A Numerical Study on the Aeroacoustic Radiation from a Finite Length Rotating Cylinder

Rotating cylinders have wide applications in different areas, especially the aerodynamic area. However, the acoustic behaviors of these components have not been widely studied. The generating noise from a spinning cylinder is mainly due to the detached vortices from the leeward of the body. In this study, the large eddy simulation technique is used to simulate the flow field over a three-dimens...

Numerical Study of Mixed Convection of Nanofluid in a Concentric Annulus with Rotating Inner Cylinder

In this work, the steady and laminar mixed convection of nanofluid in horizontal concentric annulus withrotating inner cylinder is investigated numerically. The inner and outer cylinders are kept at constanttemperature Ti and To respectively, where Ti>To. The annular space is filled with Alumina-water nanofluid.The governing equations with the corresponded boundary conditions in the polar coord...

Numerical Investigation of Turbulent Flow around a Rotating Stepped Cylinder for Corrosion Study

The Canadian Journal of Chemical Engineering, Volume 81, February 2003 Complex flows with boundary layer separation and reattachment commonly occur in situations of practical interest. In such flows, any accompanying heat or mass transfer is strongly influenced by the fluid dynamics. For example, rates of heat or mass transfer to the wall can have large variations in the reattachment region. In...

Self-propulsion of a counter-rotating cylinder pair in a viscous fluid