Relevant bibliographies by topics / Keulegan-Carpenter number

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Academic literature on the topic 'Keulegan-Carpenter number'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Keulegan-Carpenter number"

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Tatsuno, M., and P. W. Bearman. "A visual study of the flow around an oscillating circular cylinder at low Keulegan–Carpenter numbers and low Stokes numbers." Journal of Fluid Mechanics 211 (February 1990): 157–82. http://dx.doi.org/10.1017/s0022112090001537.

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The structures of the flow induced by a circular cylinder performing sinusoidal oscillations in a fluid at rest are investigated by means of flow visualization. The experiments are carried out at Keulegan–Carpenter numbers between 1.6 and 15 and at Stokes numbers between 5 and 160. Above a certain value of Keulegan–Carpenter number, depending on the Stokes number, some asymmetry appears in the flow separation and the associated vortex development behind the cylinder. The two vortices that are developed in a half cycle differ in strength and may be convected in different directions. This result
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Zdravkovich, M. M. "Inadequacy of a Conventional Keulegan-Carpenter Number for Wave and Current Combination." Journal of Offshore Mechanics and Arctic Engineering 118, no. 4 (1996): 309–11. http://dx.doi.org/10.1115/1.2833922.

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The physical consideration, taken as a starting point, has been based on the change of duration of each wave half-cycle by the superposition of a current. The Keulegan-Carpenter number could reflect that feature if the wave plus current velocity replaces the wave velocity as the reference velocity. It is also argued that the ratio of current to wave velocity is a more appropriate parameter than the reduced velocity. The modified Keulegan-Carpenter numbers separate different observed flow regimes in a coherent manner in drag coefficient and current-to-wave velocity plane.
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Nath, J. H. "On Wave Force Coefficient Variability." Journal of Offshore Mechanics and Arctic Engineering 109, no. 4 (1987): 295–306. http://dx.doi.org/10.1115/1.3257023.

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Wave force coefficient variability for cylinders, from wave to wave in a train of periodic waves, has been shown to be dependent on the phase of the force record relative to the ambient flow. The phase varies due to vortex shedding, but the maximum force is approximately constant as seen from this work and the work of other investigators. Thus, the maximum force coefficient is tightly organized according to the Keulegan-Carpenter number and scatter is seen in the phase angle versus Keulegan-Carpenter number. On the other hand, both Cd and Cm have scatter due to these phase differences from wav
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Longoria, R. G., J. J. Beaman, and R. W. Miksad. "An Experimental Investigation of Forces Induced on Cylinders by Random Oscillatory Flow." Journal of Offshore Mechanics and Arctic Engineering 113, no. 4 (1991): 275–85. http://dx.doi.org/10.1115/1.2919931.

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Results are presented from experiments investigating hydrodynamic forces induced on fixed circular cylinders by random oscillatory flows. The oscillatory flow was generated in a water tunnel and the inline and transverse forces induced on the cylinders were measured simultaneously. Analysis of the measured forces shows that significant differences exist when comparing drag and inertia coefficients to those measured under sinusoidal flow conditions, particularly in the inertia/ drag regime of the Keulegan-Carpenter number. The comparison of results for random versus sinusoidal flow conditions g
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Sumer, B. M., and J. Fredso̸e. "Transverse Vibrations of an Elastically Mounted Cylinder Exposed to an Oscillating Flow." Journal of Offshore Mechanics and Arctic Engineering 110, no. 4 (1988): 387–94. http://dx.doi.org/10.1115/1.3257077.

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This study reports the results of an experimental work carried out with an elastically mounted rigid cylinder exposed to an oscillating flow. To facilitate comparison, the steady current case is included in the test program as well. The oscillatory flow as well as the steady current conditions are created by the so-called carriage technique. The present study covers the Keulegan-Carpenter number range 5 ≤ KC ≤ 100. The range of the reduced velocity is from 0 to approximately 16 in most of the cases. The tests have been conducted for different combinations of spring stiffness and mass of cylind
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Duggal, A. S., and J. M. Niedzwecki. "Dynamic Response of a Single Flexible Cylinder in Waves." Journal of Offshore Mechanics and Arctic Engineering 117, no. 2 (1995): 99–104. http://dx.doi.org/10.1115/1.2827070.

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A large-scale experimental study to investigate the dynamic response of a single flexible cylinder in waves is presented. The cylinder was designed to exhibit the dynamic characteristics of a TLP riser or tendon in approximately 1000 m of water. Instrumentation provided detailed information on the inline and transverse curvature along the length of the cylinder. Wave loading mechanisms and the resulting response were investigated and compared with previous studies of rigid cylinders in oscillating flow. It was found that the complicated multifrequency response at large Keulegan-Carpenter numbe
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DÜTSCH, H., F. DURST, S. BECKER, and H. LIENHART. "Low-Reynolds-number flow around an oscillating circular cylinder at low Keulegan–Carpenter numbers." Journal of Fluid Mechanics 360 (April 10, 1998): 249–71. http://dx.doi.org/10.1017/s002211209800860x.

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Time-averaged LDA measurements and time-resolved numerical flow predictions were performed to investigate the laminar flow induced by the harmonic in-line oscillation of a circular cylinder in water at rest. The key parameters, Reynolds number Re and Keulegan–Carpenter number KC, were varied to study three parameter combinations in detail. Good agreement was observed for Re=100 and KC=5 between measurements and predictions comparing phase-averaged velocity vectors. For Re=200 and KC=10 weakly stable and non-periodic flow patterns occurred, which made repeatable time-averaged measurements impos
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Hamelin, J. A., J. S. Love, M. J. Tait, and J. C. Wilson. "Tuned liquid dampers with a Keulegan–Carpenter number-dependent screen drag coefficient." Journal of Fluids and Structures 43 (November 2013): 271–86. http://dx.doi.org/10.1016/j.jfluidstructs.2013.09.006.

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Bearman, P. W., M. J. Downie, J. M. R. Graham, and E. D. Obasaju. "Forces on cylinders in viscous oscillatory flow at low Keulegan-Carpenter numbers." Journal of Fluid Mechanics 154 (May 1985): 337–56. http://dx.doi.org/10.1017/s0022112085001562.

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This paper presents a comparison between theory and experiment for the in-line forces on cylinders of general cross-section in planar oscillatory flows of small amplitude. The theoretical analysis evaluates corrections to the standard inviscid inertial force at low Keulegan-Carpenter numbers which arise from the presence of viscous laminar boundary layers and from the development of vortex shedding. The boundary-layer contribution due to both skin friction and displacement effects is calculated to first order in the Stokes parameter β−½. The contribution to the in-line force from separation an
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Chaplin, J. R. "Planar Oscillatory Flow Forces at High Reynolds Numbers." Journal of Offshore Mechanics and Arctic Engineering 115, no. 1 (1993): 31–39. http://dx.doi.org/10.1115/1.2920086.

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Measurements of pressures around a circular cylinder with fine surface roughness in planar oscillatory flow reveal considerable changes in drag and inertia coefficients over the Reynolds number range 2.5 × 105 to 7.5 × 105, and at Keulegan-Carpenter numbers between 5 and 25. In most respects, these results are shown to be compatible with previous measurements in planar oscillatory flow, and with previous measurements in which the same 0.5-m-dia cylinder was tested in waves.
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Dissertations / Theses on the topic "Keulegan-Carpenter number"

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Yuen, Nathan Q. S. "Oscillating flow about circular cylinders at low Keulegan-Carpenter numbers." Thesis, 1985. http://hdl.handle.net/10945/21477.

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The in-line force and the resulting drag and inertia coefficients for smooth and rough circular cylinders immersed in a sinusoidally oscillating flow at low Keulegan- Carpenter numbers (K) have been determined experimentally and compared with those obtained theoretically by Stokes and Wang. In addition, flow visualization experiments were carried out with oscillating cylinders in a water table and the stability of the flow was investigated. The results have shown that for very low values of K, the flow about the cylinder is laminar, attached, and stable and the drag coefficient is ne
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Books on the topic "Keulegan-Carpenter number"

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Yuen, Nathan Q. S. Oscillating flow about circular cylinders at low Keulegan-Carpenter numbers. 1985.

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Conference papers on the topic "Keulegan-Carpenter number"

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Anagnostopoulos, P., A. Koutras, and S. A. Seitanis. "Numerical Study of Oscillatory Flow Past a Pair of Cylinders in a Side-by-Side Arrangement." In ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2005. http://dx.doi.org/10.1115/omae2005-67225.

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The results of a numerical study of the viscous oscillating flow around a pair of circular cylinders are presented herein, for a constant frequency parameter, β, equal to 50, and Keulegan-Carpenter numbers, KC, ranging between 0.2 and 10. The cylinders were placed side-by-side to the oncoming flow, for a pitch to diameter ratio, P/D, equal to 2. The finite-element method was employed for the solution of the Navier-Stokes equations, in the formulation where the stream function and the vorticity are the field variables. The vorticity contours generated from the solution were used mainly for the
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Anagnostopoulos, P., A. Koutras, and S. A. Seitanis. "Numerical Study of Oscillatory Flow Past a Pair of Cylinders at Low Reynolds and Keulegan-Carpenter Numbers." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32178.

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The results of a numerical study of the viscous oscillating flow around a pair of circular cylinders are presented herein, for a constant frequency parameter, β, equal to 50, and Keulegan-Carpenter numbers, KC, ranging between 0.2 and 10. The cylinders were placed side-by-side to the oncoming flow, for a pitch to diameter ratio, P/D, equal to 1.2. The finite-element method was employed for the solution of the Navier-Stokes equations, in the formulation where the stream function and the vorticity are the field variables. The streamlines and vorticity contours generated from the solution were us
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Mohammad Beigi Kasvaei, M., M. H. Kazeminezhad, and A. Yeganeh-Bakhtiary. "Numerical Investigation on Wave Induced Vortex Dynamics Around Cylindrical Pile With Considering Varying Keulegan-Carpenter Number." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61948.

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Three-dimensional numerical simulation of regular waves passing over cylindrical monopile has been conducted to investigate the vortex dynamics. To do so the rectangular wave flume and monopile is modeled on a solver, available in the open-source CFD toolkit OpenFOAM®. The solver applied RANS equations with VOF method for tracking free surface. Model validation has been done by comparison numerical results with the experimental ones and admissible agreement has been seen. Computations have been done for three cases with different pile diameters consequently for different Keulegan-Carpenter num
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Dong, Guanning, Liang Cheng, Chengjiao Ren, and Feifei Tong. "Experimental Study on Hydrodynamic Damping of an Oscillating Cylinder Under Small Keulegan-Carpenter Numbers." In ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/omae2024-126665.

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Abstract This paper presents an experimental study on the hydrodynamic drag and inertia coefficients, which were decomposed from the total measured force through Morison equation, of an oscillating cylinder in quiescent water under small Keulegan-Carpenter number (K) conditions. The objective of this study is to address a discrepancy demonstrated by Ren et al. (J. Fluid Mech., vol. 913, 2021, A36) where drag coefficients determined in experiments under small K conditions deviated significantly from those of the analytical solution and direct numerical simulations (DNS). Two experimental inaccu
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Turner, Matthew, Lu Wang, Krish Thiagarajan, and Amy Robertson. "Heave Plate Hydrodynamic Coefficients for Floating Offshore Wind Turbines – A Compilation of Data." In ASME 2023 5th International Offshore Wind Technical Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/iowtc2023-119414.

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Abstract The National Renewable Energy Laboratory’s OpenFAST software is utilized by academics and industry professionals alike to simulate offshore wind turbines. The software’s modeling of hydrodynamic loads on heave plates attached to these structures relies on user-specified hydrodynamic coefficients. To guide the proper selection of these coefficients and potentially develop a new functionality within OpenFAST that automatically prescribes and/or adjusts the heave-plate hydrodynamic coefficients, we review past literature to examine the dependence of the added mass, damping, and drag coef
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Anagnostopoulos, P., Ch Dikarou, and S. A. Seitanis. "Numerical Study of Oscillatory Flow Past Four Cylinders in Square Arrangement for Pitch Ratio Equal to 4." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49578.

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The results of a numerical study of the viscous oscillating flow around four circular cylinders are presented herein, for a constant frequency parameter, β, equal to 50, and Keulegan-Carpenter numbers, KC, ranging between 0.2 and 10. The cylinders were placed on the vertices of a square, whose two sides were perpendicular and two parallel to the oncoming flow, for a pitch ratio, P/D, equal to 4. The finite-element method was employed for the solution of the Navier-Stokes equations, in the formulation where the stream function and the vorticity are the field variables. The streamlines and the v
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Wang, Jungao, Rohan Shabu Joseph, Muk Chen Ong, and Jasna Bogunović Jakobsen. "Numerical Investigation on Vessel Motion-Induced VIV for a Free Hanging Riser Under Small Keulegan-Carpenter Numbers." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61705.

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A free-hanging riser is a typical riser configuration seen in the disconnected drilling riser, the water-intake riser and the deep-sea mining riser. In offshore productions, these marine risers will move back and forth in water and further generate an equivalent oscillatory current around themselves, due to the vessel motions. Both in marine operations in the field and model tests, it has been reported that such oscillatory current lead to riser vortex-induced vibration (VIV) and cause structural fatigue damage. Recently, there have been some attempts to numerically predict vessel motion-induc
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Peng, Peng, Kun Liu, Jiaxia Wang, and Zhenguo Gao. "Hydrodynamic Damping of a Riser Oscillating in an In-Line Steady Current at Low Keulegan-Carpenter Numbers." In ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-102125.

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Abstract Hydrodynamic damping is key to the fatigue design of risers whose dynamic responses are controlled by the wave induced vessel motions. The effect of in-line steady current on the hydrodynamic damping is not fully understood and the prediction of hydrodynamic damping of a riser at low KC with the relative velocity Morison equation raises concerning for overestimation, which may result in overestimation of fatigue life in design. In this paper, the hydrodynamic damping of a circular cylinder oscillating in an in-line steady current is investigated based on the 2D direct numerical simula
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Ramiro Amorim, Andre, Felipe Oliveira Ribeiro, Rodrigo Klim Gomes, Peyman Asgari, Rodrigo Do Nascimento Carvalhal, and Alexandre Rezende Diezel. "Gimbal Joint Riser – A Novel Concept: Experimental Hydrodynamic Coefficients." In ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-103189.

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Abstract Gimbal Joint (GJ) is a device designed to connect the upper and lower parts of a steel riser in a free-hanging system. The mechanism consists of a flexible conduit, inside a structure that is made of several hinged connection elements, making the whole system work as an articulation. Hydrodynamic properties of GJ are recognized as an uncertainty source due to its novelty and very specific geometry. Recently, an experimental campaign of a model scale size — 1:9 — has been performed as a part of technology qualification programme. The forced oscillation tests focused on obtaining drag a
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Salvador Lopes, Filipe, Antonio Carlos Fernandes, Joel Sena Sales Junior, and Emanuele Moreira Francisco. "The Influence of the Keulegan-Carpenter Number when Defining the Safe Operation Window of the Vertical Installation of a Subsea Equipment." In ANAIS DO 30º CONGRESSO INTERNACIONAL DE TRANSPORTE AQUAVIáRIO, CONSTRUçãO NAVAL E OFFSHORE. Galoa, 2024. https://doi.org/10.17648/sobena-2024-195588.

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Reports on the topic "Keulegan-Carpenter number"

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Bryant, Mary, Duncan Bryant, Leigh Provost, et al. Wave attenuation of coastal mangroves at a near-prototype scale. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45565.

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A physical model study investigating the dissipation of wave energy by a 1:2.1 scale North American red mangrove forest was performed in a large-scale flume. The objectives were to measure the amount of wave attenuation afforded by mangroves, identify key hydrodynamic parameters influencing wave attenuation, and provide methodologies for application. Seventy-two hydrodynamic conditions, comprising irregular and regular waves, were tested. The analysis related the dissipation to three formulations that can provide estimates of wave attenuation for flood risk management projects considering mang
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