... ABSTRACT In this study, preliminary results from scaled model tests (1:45) in a 3D-wave-current-basin are presented. A 4-legged jacket model has been subjected to waves, current and combined boundary conditions. The influence of the jacket geometry on resulting flow patterns is analyzed...

... torsional vibration circular cylinder asia government upstream oil & gas vibration cylinder system amplitude natural frequency upstream cylinder vibration frequency cylinder downstream cylinder gap ratio regime fiv flow pattern vibration amplitude tandem cylinder vortice torsional...

... flow control model was also further studied by analyzing flow patterns. INTRODUCTION Fatigues and vibrations due to dynamic marine environment, like Vortex-Induced Vibration(VIV), are fairly severe that the analysis of fluid and structure interaction (FSI) for offshore structures are important...

... flow pattern simulation free surface jin dam-break wave dam-break flow pressure variation particle semi-implicit method wave propagation upstream oil & gas gotoh particle particle number density water body violent flow mesh-free method khayyer ice cover partial ice cover...

... different flow patterns were identified, including a double swirling flow. Furthermore, numerical simulations were performed for two additional models, with prolate and oblate semi-spheroidal end shells. The tank with prolate end shell did not show the formation of the double swirling. KEY WORDS: sloshing...

...-water three-phase flow in the largediameter (124mm) fluctuating tube respectively at the dip angle θ of 0°, 5°, 10°, 15°, 20° and 30° at the inlet mixture velocity of 0.5m/s at the gas content rate (Cg) of 10% and 50%, and then analyzes and compares the evolution trend of the three-phase flow pattern...

... nozzle flow pattern upstream oil & gas abrasive water jet suction dredger influence range characteristic target distance application hard soil dredger cutting numerical simulation variation characteristic water jet Study on Mechanism of Cutting Hard Soil by High Pressure Water Jet...

... and 52m length. According to the oil-water flow structures and the analysis of pressure drop signals, different flow patterns are defined and distinguished. By means of local sampling device, the water cut distribution on pipe flow section under different experimental conditions was measured...

... flow transportation, appears around the conversion point of the flow pattern of the solid-liquid flow, and the different flow patterns are analyzed to explain the valley-point better as well. Besides, various sizes of the particles were included in the model, which means the influence of different...

... frequency. At KB=0.09, the plate experiences resonance with the maximum amplitude of Y/D=0.283; the vortices from the cylinder can be shed freely in the gap, and then impinge on the plate, i.e., the vortex and plate interactions are enhanced. This flow pattern is different from the corresponding case for S...

... on the observation, the stability map for the flowloop was developed to provide flow patterns under different ranges of superficial velocity of liquid and gas. Moreover, it was observed that when injecting gas at the point downstream of the liquid pump, the pressure of the flowloop showed a flow regime of dual...

... inclined-pile group foundation wind turbine foundation scour depth subsea system scour renewable energy offshore wind turbine shear stress boundary flow pattern scour hole offshore projects planning and execution group foundation equation platform design local scour sediment seabed scour...

... Abstract Flow Induced Vibration (FIV) caused by interacting internal flow in the subsea spanning pipeline, which is one of the important phenomena that contribute to failure of pipelines, especially when the internal flow pattern forms slug flow. A "two-way coupling" fluid-structure...

... major simultaneous flow mechanisms during the evolution process are discovered and to quantify the observed flow patterns, three non-dimensional parameters L n , R n and d n are introduced as functions of the non-dimensional time t n . This research further discovered that major influence...

... with the increasing strength of disturbance. Different flow patterns are identified and discussed, such as Ω-type vortex and the complete suppression of vortex shedding. Characteristics of effect of disturbance on the generation and distribution of surface vorticity are presented in detail. coordinate system...

... show that physical properties of the liquid, including viscosity, density and surface tension, have remarkable influence on the characteristics of severe slugging, including the flow pattern, the period and the pressure fluctuation, whereas the influence of the gas physical properties...

... (WECs). We also eval- uate the effects of the inherently unsteady flow induced by waves and currents on the settlement of various species. Finally, we discuss the impact of the biological growth on the flow pattern around such devices (and consequently on their efficiency) and investigate the influence...

... is 0.25. A hydrogen bubble technique is used to visualize the flow pattern and the vortex shedding around the model. The arrangement of the platinum wires for generating hydrogen bubbles is shown in Figure 1B. One wire is placed 611 Proceedings of the Twenty-second (2012) International Offshore and Polar...

... chengtong reach ebb current velocity siltation fuzhong waterway upstream oil & gas current speed discharge flow pattern ebb current speed waterway evolution yangtze river langshansha reach river discharge channel evolution port Channel Evolution of Chengtong Reach at Yangtze Estuary...

...-tie's effect on sloshing loads was required. numerical result natural period crosstie flow pattern liquified natural gas experimental study midstream oil & gas crosstie model subsea system model tank cross tie wave condition numerical study isope comparative study simulation...