... school force trace justesen sarpkaya agreement rough cylinder drag coefficient otc 6518 garrison rodenbusch roughness coefficient reynolds number experiment wolfram hydrodynamic lift OTC 6518 Hydrodynamic Lift and Drag on Rough Circular Cylinders T. Sarpkaya, Naval Postgraduate School...

..., the critical Reynolds number decreases with increasing roughness, and the transition of boundary layers occur at lower Reynolds numbers. The drag coefficients of rough cylinders in the supercritical range of Reynolds numbers, is always larger than that of smooth cylinders. In harmonically oscillating flows...

... section keulegan-carpenter number force coefficient displacement force transducer otc 5096 time series hydrodynamic force rough cylinder equation roughness element transducer diameter upstream oil & gas OTC 5096 Forces on a Large Cylinder in Random Two-Dimensional Flows by G...

... parameters such as the relative current velocity, Reynolds number, and the Keulegan-Carpenter number were varied systematically and the in-line force measured simultaneously. The principal results, equally valid for smooth and rough cylinders, are as follows: the drag coefficient decreases with increasing...

... component rough cylinder normal force drag coefficient OTC 4227 Wave Forces on Inclined Smooth and Rough Circular Cylinders by Turgut Sarpkaya, Naval Postgraduate School, and Thomas S. Raines and Dean O. Trytten, LCDR, U.S. Navy This paper was presented at the 14th Annual OTC in Houston, Texas, May 3...

... ABSTRACT This paper presents a review of wave force predictions for rough and smooth cylinders. The Morison equation and some basic results for the drag and inertia coefficients in laboratory and ocean tests are reviewed. New results for rough cylinders at large Reynolds number are also...

... provided that the boundary" layer remains laminar. evidently cylinder rough cylinder boundary smooth cylinder oscillation lift coefficient roughened cylinder artificial intelligence reynolds number transverse force machine learning fraction inline inertia coefficient inline force...

... on to the natural frequency of the cylinder. The lift coefficient is amplified by a factor of about two relative to that for a stationary cylinder in harmonic flow. The relative amplitude of oscillation for both smooth and rough cylinders is a unique function of the response parameter R p . INTRODUCTION...

... keulegan carpenter number wave force drag coefficient circular cylinder smooth cylinder transverse force roughness oscillatory flow sarpkaya rough cylinder surface roughness OTC 2902 THE INFLUENCE OF SURFACE ROUGHNESS UPON THE DRAG OF CIRCULAR CYLINDERS IN WAVES by Richard B. Matten, National...

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

... shedding and the Strouhal number have been determined. The results have shown that (a) for smooth cylinders, all of the coefficients cited above are functions of the Reynolds and Keulegan and Carpenter numbers, particularly for Reynolds numbers larger than about 20,000; (b) for rough cylinders, the force...