... on their capabilities, robots are assigned diversified tasks and paths. The resulting model, represented as a max-plus linear system, effectively manages task concatenation and synchronization. Simulation tests confirm the model s efficacy in capturing the devices coordinated behaviour in underwater repetitive...

..., the interaction between them becomes serious and is of a typically prominent phenomenon. VIV of multiple flexible marine pipelines or risers in deepwater is deemed to be one of the most challenging topics in offshore engineering. oscillation synchronization pipe side-by-side flexible pipe vibration...

... the intrinsic behavior of self-excitation and self-limitation is involved. The early proposed frequency relationship of vortex-excitation in synchronization is applied with local modifications by experimental measurements, through which the vortex shedding characteristics could be identified as well...

... Abstract The ability to predict Vortex Induced Vibration (VIV), at least within engineering accuracy, is very important for deep water risers, flowlines, and wellheads. Uncertainty driven designs and operations cost the industry tremendously. Best practice synchronized perfect lock-in response...

... synchronization of local loads was the reason for triggering. The synchronization could be caused by different physical phenomena where the drift speed, ice thickness and ice temperature is of substantial importance. As well, temporal fluctuations of loads were studied within the event. Together with oscillations...

... D/U < 0.10. There are distinct regions of synchronization between the dominant wake periodicity and cylinder oscillation. The combined wake of the cylinder pairs takes significantly different patterns based on whether it is the upstream cylinder or the downstream one which is being oscillated...

...- dimensional prescribed wavelength of 6. With the increasing incoming velocity, the oscillating amplitude of the wavy cylinder is firstly decreased at the start of synchronization with the comparison to that of the straight cylinder, and then increased greatly at higher velocities. Meantime, the response...

...-control. This paper focused on making chaos in brushless direct current motor (BLDCM) system of underwater vehicle with a novel method called synchronization. By synchronizing the BLDCM system with a known chaotic system, we design a controller to solve the chaos anti-control problem. The theory...

... with such disturbance are reduced at mild and high waviness at occurrence of synchronization of a circular cylinder without disturbance. Reduction of RMS values reach up to 48.5% for harmonic disturbance and 53% for cone-like disturbance at the waviness of 0.1. INTRODUCTION In many engineering, a great deal of bluff...

... synchronization based on the tide variations. INTRODUCTION There is an increasing interest in acquiring oceanographic data due to the importance of the ocean to different aspects of human life. Navigation, fishing, ecology, weather influence and support for petroleum offshore exploration are some...

... region are reported. The wake undergoes considerable modification compared with the static case, and the manner in which the wake responds depends strongly on whether it is the upstream or downstream cylinder which is being oscillated. There are several distinct regions of synchronization between...

... on the problem of synchronization of an oscillating obstacle with its wake were published by Parkinson (1974), Sarpkaya (1979), Bearman(1984) and Griffin and Hall (1991). These works showed that large phase variations between the unsteady lift F y and the cylinder position Y appear when a cylinder is subjected...

..., there is a large increase in drag. Reviews of the research conducted in last years on the problem of synchronization of an oscillating obstacle with its wake were published by Parkinson (1974), Sarpkaya (1979), Bearman(1984) and Griffin and Hall (1991). These works showed that large phase variations between...

... Abstract: The hydrodynamic forces acting on a circular cylinder forced to oscillate transversely in a uniform flow were measured, and the effect of synchronization of vortex shedding on the forces were examined. The vortex shedding frequency fv becomes 1/3 of the frequency of cylinder...

... ABSTRACT: A van der Pol equation with parametric forcing is introduced as a model for vortex shedding from a forced cylinder in a uniform flow. The parametric forcing function is developed so that the boundaries of the synchronization region correspond to the boundaries found experimentally...