...=20/80 25/75 30/70 35/65 on inertia and drag coefficients were examined. The inertia and drag coefficients in Morison s equation are determined by least square fit of measurements on circular columns and square pontoons. Results show that the inertia coefficient decreases with KC number in power...

... on the cross sections along the horizontal pontoons are estimated based on the local Keulegan-Carpenter (KC) numbers instantaneously estimated in the time domain, and the required KC-dependent drag coefficients are pre-calculated by dedicated two-dimensional (2D) CFD analysis for the relevant cross sections...

... in a clear water condition. Their results indicate different velocity has different scour profiles; bedload is dominant for small velocity whereas suspended load is dominant and scour profiles are irregular in high velocity cases. pipeline kc number scour profile upstream oil & gas scour flow...

... of this paper is to investigate the contribution to the damping and added mass coefficients for different diameters of the heave plates by using forced oscillations of the FOWT. The effects of Keulegan-Carpenter ( KC ) number range from 0.18 to 1.11 and frequency of forced oscillation range from 0.40 Hz to 1.43...

.... Experiments are carried out in a wave flume at a water depth of 0.7m at low Keulegan-Carpenter (KC) numbers to measure the horizontal and vertical wave forces acting on the cylinder. 31 pressure transducers are used to collect the hydrodynamic pressure on model surfaces, and the total forces in horizontal...

... formula steepness reynolds number kc number drag force experiment coefficient drag coefficient hydrodynamic force steel net panel regular wave twine Experimental Study on Hydrodynamic Forces of Net Panel Ming-Fu Tang, Tiao-Jian Xu, Guo-Hai Dong, Yun-Peng Zhao State Key Laboratory of Coastal...

... and in calculations of the main global responses of structures due to wave and current forces, an equivalent pile model is often adopted. cfd cylinder boundary condition equation coefficient drag coefficient kc number equivalent circular cylinder wave load drilling equipment calculation upstream...

... are taken into consideration to validate the accuracy of the solver as well as overset grid technique. As for cases with tandem dual cylinders, gap ratios (G/D, where G means gap between two cylinders and D represents diameter of each cylinder) are set as 0.5 and 1.0; Keulegan-Carpenter (KC) numbers...

... be assessed, but also valuable insight can be obtained into the flow behavior through visualization of the flow field. single track force coefficient fluid dynamics drag coefficient smooth circular cylinder flow angle circular cylinder kc number chord experimental data transverse force...

... ABSTRACT In this study, both experiments and numerical simulations have been performed to study sinusoidal oscillations of an identical pair of circular cylinders in a side-by-side configuration for various gaps in the still fluid. The key parameter of Keulegan-Carpenter (KC) number...

... in storms and low structure size vs. performance ratios. central pipe fbw model wave flume transmission coefficient configuration turbulent boundary layer akgul cylinder variation pipe regime physical model test kc number profile view wave transmission Effect of Pipe Spacing...

... Abstract The paper presents an experimental study of local scour around truncated vertical piles subject to oscillatory flow. The experiments were conducted with six height-to-diameter ratios ( h/D =0.25~3.5) and three KC numbers (33, 52 and 80). The development of scour depth around...

... and results were reported in an earlier paper by the last author(Lopez-Pavon et al., 2014). This paper reports on a new study conducted at University of Maine on a 1:80 scaled model. Forced oscillation experiments were performed at three different KC numbers, and at different oscillating frequencies ranging...

... cylinder coefficient keulegan-carpenter number subsea system hydrodynamic coefficient inertia coefficient drag coefficient force response kc number morison equation kc 11 test configuration arrangement configuration Hydrodynamic Coefficients for Array of Tubular Cylinders V. J. Kurian1...

.... lng roll motion drag coefficient fpso hull gas monetization ship upstream oil & gas bilge keel velocity perpendicular weld subsea system side shell calculation ssfu liquified natural gas offshore ship effectiveness conversion kc number relative velocity lateral load...

... grating (FBG) sensor that detects the dynamic behavior of the riser by capturing the wavelength variation between the emission and the absorption of a signal. The dynamic behavior of the riser varies along its length in the x-y plane because of complex VIVs under high Keulegan-Carpenter (KC) numbers, even...

... of the safe design of pile-supported offshore structures. In the case of slender piles, in which both drag and inertia forces induced by highly complex turbulent flow are important, an analytical solution is hardly feasible. kc number reynolds number different arrangement pile group arrangement...

... of wave environments at site location. sarpkaya calculation mooring system amplitude upstream oil & gas relative velocity load distribution subsea system kc number experiment carpenter simulation bilge keel load inertia coefficient keulegan drag-only coefficient fpso...

...-Carpenter) numbers distributed along the riser length excited at the top end are calculated and the riser is assumed to be excited with the vortex shedding frequencies corresponding to different KC number along the riser length. In the case studies, vortex-induced lift force with three kinds of vortex...

.... A porous KC number has been used by Molin (2001, 2003), Molin and Nielsen (2004), which relates to the force over the perforated member due to the water velocity through the holes: 22 )1 r r D zporKC µ , where r is the perforation ratio and µ is a 'discharge coefficient'. The estimated added mass for the 5...