Interaction between a pair of circular cylinders in a varied free-stream direction
Abstract
An experimental study of the interaction between a pair of circular cylinders in a free stream with varying direction is reported for several fixed distances between the cylinders. The study is applicable to the investigation of flow around buildings in close proximity or of flow around tube banks in a heat exchanger. The Reynolds number based on the cylinder diameter is 7100, and the results indicate that the cylinder pair will undergo highly unsteady drag and lift forces, both in magnitude and frequency, when the free-stream direction is in a particular range which depends on the distance between the two cylinders. Time-averaged and turbulence characteristics of the wake behind the cylinders are described.
- Publication:
-
Hokkaido University Faculty Engineering Bulletin
- Pub Date:
- August 1978
- Bibcode:
- 1978HUFEB........1A
- Keywords:
-
- Aerodynamic Drag;
- Aerodynamic Interference;
- Circular Cylinders;
- Flow Measurement;
- Free Flow;
- Lift;
- Aerodynamic Coefficients;
- Boundary Layer Flow;
- Heat Exchangers;
- Pressure Distribution;
- Reynolds Number;
- Strouhal Number;
- Turbulent Flow;
- Velocity Distribution;
- Vortex Streets;
- Fluid Mechanics and Heat Transfer