... shown that the drag and inertia coefficients for the in-line force acting on a cylinder in the vicinity of a plane wall are in- creased by the presence of the wall. This increase is most evident in the range of ejO values smaller than about 0.5. Both coefficients depend on the Reynolds number, Keule...

... effects are not free from the effects of the boundary layer which forms on the bottom plane. oscillation inline force coefficient oscillatory flow athigh reynolds number inertia coefficient experiment frequency cylinder evidently boundary layer force coefficient transverse force...

... number drag coefficient roughened cylinder lift coefficient variation smooth cylinder evidently circular cylinder keulegan-carpenter number roughness element harmonic flow rough cylinder coherence steady flow cylinder relative roughness coefficient OTe 2901 WAVE FORCES ON ROUGH-WALLED...

... demonstrated [lJ and will become further evident from the data to be presented. The oscillating flow system consisted of a large U-shaped vertical water tunnel as shown in Fig. 1. The cross-section of the two vertical legs is 3 ft by 6 ft and that of the test section is 3 ft by 3 ft. The two corners...