Abstract
Effects of an each circular cylinder on the unsteady cavity flow of two in-line circular cylinders were experimentally investigated at Reynolds numbers from 1.89×10^5 to 2.04×10^5. Non-dimensional distance L/d between the two circular cylinders was varied from 1.0 to 2.5, whered is a diameter of each circular cylinder. A high-speed digital video camera was used to take motion pictures of cavity configurations at 1000 frames/sec. Cavity length, cavity volume and power spectra were measured through the high-speed motion pictures.
