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Keywords: cylinder
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Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1191
... Abstract Turbulent flow across the surface of the object causes pressure fluctuation and generates sound waves. The resonance frequency and sound pressure level (SPL) of different geometries are different. In this paper, a three-dimensional cylinder with a Reynolds number of 41100 and a rod...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1215
... generation stability is poor, so it cannot be used in the large-scale power generation. ocean energy sustainability cylinder social responsibility pto system lmmhd-wec generator coefficient sustainable development renewable energy flow rate regular wave lmmhd generator output power...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3138
... marine transportation short wave resistance proceedings experimental result gören diffraction effect international maritime organization cylinder forward speed papanikolaou Proceedings of the Thirty-first (2021) International Ocean and Polar Engineering Conference www.isope.org Rhodes...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3143
... of the cylinder changed, resulting in different positions of peak frequency in high-frequency wave loads. Consequently, to determine the maximum possible focusing wave loads on the column group structures, multiple calculations at different focusing positions are necessary. INTRODUCTION With the development...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3121
... Abstract This paper presents numerical results based on the ISOPE-2020 comparative study (Sriram, et al., 2020; 2021) on steep focused waves interactions with fixed and moving cylinders. A fully nonlinear threedimensional numerical wave tank based on a high order boundary element method...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3142
... makers, whereas Wang and Ren (1994) studied the wave interactions with a concentric porous cylinder system, rigidly fixed on the seabed. Williams et al., (2000) investigated water wave interactions with a floating porous cylinder embodying a permeable side surface and impermeable top and bottom...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3141
... are optimized. After that, taking the fluid viscosity into consideration, the heave motions of different cylinders with various sizes are investigated via the optimized models. Meanwhile, the equation of wave-cylinder coupling movement is established based on the potential flow theory and linear gravity water...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-4124
... of cylindrical shells have been studied by many researchers. Cylindrical shells were first studied in (El Naschie, 1974). Early experimental tests show that the buckling load of cylinders is much lower than predicted (Arbocz, 1991; Jullien, 1998) And it is sensitive to the size and opening angle...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3222
... Abstract Investigated was the lock–in case of the vortex–induced vibration of an oscillating circular cylinder in a circulating water channel subjected to a reduced velocity flow of 5.18 at a Reynolds number of 5×10 4 . The coupled dynamic inline and transverse response of the cylinder...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3221
... Abstract Three–dimensional URANS numerical flow simulations of a fixed circular cylinder subject to vortex–induced vibration were performed to assess the capability of the SST k–ω and DES turbulence models. Simulations with the DES turbulence model correlated more closely to experimental...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3217
... Abstract Strouhal number is an essential dimensionless quantity for characterizing the vortex shedding frequency of the flow around a bluff body. In this study, the Strouhal number for a near–wall circular cylinder fully immerged in a shear flow was experimentally investigated within...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3219
... conditions. The objective of this paper is to investigate the effect of free surface on VIM for the Reynolds number covering 1.0×10 5 <Re<1.6×10 5 . The two degree–of–freedoms (DOF) vortex–induced motions of a circular cylinder with and without free surface are investigated with our in–house solver...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3215
... or suppress such vortex–induced vibration. In this paper, we firstly simulate typical vortex dominant flow problems (e.g. around rigid cylinder flows) by commercial software STAR–CCM+ and the in–house unstructured Navier–Stokes solver. This helps to investigate the mechanism of vortex formation in the wake...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3214
... Abstract The Vortex-induced vibration (VIV) prediction of long flexible cylindrical structures relies on the accuracy of the hydrodynamic database constructed via rigid cylinder forced vibration experiments. However, to create a comprehensive hydrodynamic database with tens of input parameters...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3226
... Abstract The effects of symmetric strips on the flow-induced oscillation (FIO) of a cylinder in a uniform flow are investigated numerically. A pair of symmetric smooth strips are attached parallelly to a cylinder at different angles a from the frontal stagnation point. One degree of freedom...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3166
... Abstract The oblique water entry of a cylinder is investigated experimentally in the present study. The cylinder is driven by a computer-controlled linear motor to ensure the constant impact velocity during the water entry process. To investigate the influence of wave on the impact loads...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3225
... angle study is for us to observe the formation of the wake and interferences of the flow over the cylinders. In this paper, the flow that passes a fixed and freely vibrating cylinder are investigated. The focus of the study is more on the characteristics of a riser system with auxiliaries. The riser...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3224
... Abstract In this paper, the forced vibration and vortex induced vibration of a cylinder under the combined action of uniform flow and oscillatory flow were numerically simulated by using dynamic grid technology. The effects of the distance between the cylinder and the wall and the number...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1323
... turbulence model truss leg upstream oil & gas cylinder cfd result cfd calculation inflow velocity reynolds number Using CFD to Assess the Wind Drag Force Acting on a Jack-up Truss Leg Zana Sulaiman GustoMSC B.V. Schiedam, The Netherlands ABSTRACT This paper presents the results from wind load...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3203
... ABSTRACT Wave focusing is one of the mechanisms result in the generation of extreme waves in recent years. Basic work that the accurate numerical simulation of the interaction between the focusing wave with the fixed cylinder requires taking viscosity into consideration. In this paper...

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