Experiments on flow past rough circular cylinders at large Reynolds numbers

Data have been obtained in the 12-foot pressurized wind tunnel at NASA Ames Research Center on flow past smooth and rough circular cylinders at high Reynolds numbers. Steady and unsteady surface pressures were measured around and along the cylinders. Analysis of the results provides lift and drag coefficients and Strouhal numbers for cylinders of several roughness at Reynolds numbers up to 8 × 10^6.