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Numerical Analysis of Vortex-like structure induced

Two-dimensional, time-dependent, reactive Navier—Stokes equations involving the effects of viscosity, thermal conduction, molecular diffusion and turbulence etc. were solved to obtain a deep insight into gaseous detonation vortex-like structures and its induced mechanism. Detailed chemical reaction model, together with standard κ-∊ turbulence model, was employed in this paper. Numerical

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Experimental Investigations of the Efficiency of Round

Apr 07, 2011 · Vortex induced vibrations (VIVs) may cause a large amount of damage to deep water risers. Helical strakes are used as a mitigating measure to suppress these vibrations. The purpose of this paper is to verify the efficiency of round-sectioned helical strakes in suppressing VIV.

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Light-induced spiral mass transport in azo-polymer films

Non-uniform light beams can create patterns in azo-polymer films by inducing mass transport, yet the process is not well understood. Using optical vortex beams, Ambrosioet al. observe the

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Design, Modeling, and Experiments of the Vortex-Induced

Based on vortex-induced motions, the mechanism of generating device can be divided into piezoelectric [4244], electromagnetic, and electrostatic [4547], among which, piezoelectric type is used and valued the most.Most piezoelectric energy harvesters use a cantilever beam of one or two piezoelectric ceramic layers [].The cantilever beam is generally placed on the body of a vibrating

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INDUCED VIBRATIONS ENERGY GENERATION FROM

vortex induced vibrations in water to extract energy. Structures subjected to fluid flow are usually designed to minimize fatigue caused by vortex induced vibrations. Only recently has the idea been proposed to enhance the vibrations in order to maximize energy extraction from the fluid. This technology works by securing a

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Experimental investigation on the suppression of vortex

ABSTRACTVortex-induced vibration (VIV) is a common flowstructure interaction phenomenon which occurs when a cylindrical riser in a fluid flow causes an unsteady flow pattern due to vortex shedding. The vibration mechanism is further complicated by wake interference. An experimental investigation was conducted to study the effectiveness of multiple control rods, in different configurations

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Mechanism on suppression in vortex-induced vibration of

Mechanism on suppression in vortex-induced vibration of bridge deck with long projecting slab with countermeasures Zhou, Zhiyong (State Key Laboratory for Disaster Reduction in Civil Engineering, Transport Industry Key Laboratory for Wind Resistance Technique in

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Mechanisms of the Vertical Vortex Induced Vibration

Mechanisms of the Vertical Vortex Induced Vibration of the Storebælt Bridge J.M. TerrØs-Nícoli1, Gregory A. Kopp2 1 Wind Engineering Coordinator, CEAMA, University of Granada, Spain, [email protected] 2 Professor, Faculty of Engineering, University of Western Ontario, London, Canada, [email protected] ABSTRACT Considerable research has focused on the vortex induced vibration of

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Vortex induced vibrations Trondheim, Norway Ersegun

In an effort to gain a better understanding of flexible body dynamics underwater, I have begun to explore vortex-induced vibrations. Similar to ice induced vibrations, we still have only very limited understanding the complex nature of vortex-induced vibrations. I am currently working on vortex-induced vibration suppression mechanisms.

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Elucidation of the Molecular Mechanism Underlying Lippia

Lippia citriodora ethanolic extract (VEE) and verbascoside (Vs), a phenypropanoid glycoside, have been demonstrated to exert relaxant and anxiolytic properties. However, the molecular mechanisms behind their effects are still unclear. In this work, we studied the effects and action mechanisms of VEE and Vs in vivo and in vitro, on human neurotypic SH-SY5Y cells.TST was conducted on mice

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Mechanisms of Chemotherapy-Induced Peripheral Neuropathy

Chemotherapy-induced peripheral neuropathy (CIPN) is one of the most frequent side effects caused by antineoplastic agents, with a prevalence from 19% to over 85%. Clinically, CIPN is a mostly sensory neuropathy that may be accompanied by motor and autonomic changes of varying intensity and duration.

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EXPERIMENTAL INVESTIGATIONS OF VORTEX INDUCED

The oscillating forces induced by vortex shedding are created by the fluctuation of fluid pressure on the structure's surface. The fluid pressure fluctuates as vortices are shed alternately from each side of the structure. Vortex shedding generates a periodic asymmetric flow which is well known as the Karman vortex

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VIVACE (Vortex Induced Vibration Aquatic Clean Energy) A

Sep 16, 2008 · The vortex induced vibration aquatic clean energy (VIVACE) converter—invented by Bernitsas and Raghavan, patent pending through the University of Michigan—satisfies those criteria. It converts ocean/river current hydrokinetic energy to a usable form of energy such as electricity using VIV successfully and efficiently for the first time.

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What is Fish Technology? What are Vortex Induced

Fish technology is a method that scientists will use to benefit from the vibrations and undulations that strike a circular or spherical object placed in a slow moving stream such as a river. Fish Technology makes use of water energy from vortex induced vibrations. This is an elegant and unique concept, and here we'll examine how the technology evolved and how it works.

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Numerical Analysis of Vortex-like structure induced

Abstract Two-dimensional, time-dependent, reactive Navier—Stokes equations involving the effects of viscosity, thermal conduction, molecular diffusion and turbulence etc. were solved to obtain a deep insight into gaseous detonation vortex-like structures and its induced mechanism.

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Mechanism of DNA‐Induced Phase Separation for

Mechanism of DNA‐Induced Phase Separation for Transcriptional Repressor VRN1. Huabin Zhou. BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Peking-Tsinghua Center for Life Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871 P. R. China

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Mechanism of wavy vortex and sign laws in flow past a

Sep 10, 2018 · Mechanism of wavy vortex and sign laws in flow past a bluff body vortex-induced vortex. Authors; the theory of a vortex-induced vortex is introduced to explore mechanisms in a wavy vortex and applicable sign laws for uniform and incompressible flow past a fixed bluff body. Based on the analysis of the nearest-wall flow, two vortex-induced

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Vortex-induced waves and the mechanism of UCL Discovery

Zainal Abidin, Mohd Izzudin Izzat Bin; (2019) Vortex-induced waves and the mechanism of drop entrainment in transition from stratified to dispersed oil-water pipe flows. Doctoral thesis (Ph.D), UCL (University College London).

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Study on the Effect and Mechanism of Aerodynamic

Although not always resulting in catastrophic failures, vortex-induced vibration (VIV) response can seriously impact the fatigue life and functionality of bridges, especially for separate pairs of box girders in cable-stayed bridges. This study investigates the effects of three aerodynamic measures grating, inclined web plate, and the baffles on separated box girders in the cable-stayed

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INVESTIGATION ON VORTEX INDUCED

- quasi-static actions, induced by phenomena which are characterised by periods of the order of ~100 seconds, e.g. the long period current variations and the fluctuations associated with large eddies; dynamic loads, generated by short period phenomena, such as short period vessel motions, the wave motions, and vortex induced vibrations (VIV).

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Vortex-Induced Vibration Structural Response under

A model for calculating response associated with vortex-induced vibrations of a cylinder is proposed. The model considers the periodic wake as a nonlinear oscillator interacting nonlinearly with the body oscillator. For studying structural response, parametric excitation is taken as the driving mechanism.

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Author CHETAN VASHISHT

Authors Deep Learning of Vortex Induced Vibrations

Deep Learning of Vortex Induced Vibrations View on GitHub Authors. Maziar Raissi, Zhicheng Wang, Michael Triantafyllou, and George Karniadakis. Abstract. Vortex induced vibrations of bluff bodies occur when the vortex shedding frequency is close to the natural frequency of the structure. Of interest is the prediction of the lift and drag forces on the structure given some limited and scattered

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Vortex-induced vibrations of two cylinders in tandem

This suggests that the vortex shedding is an important mechanism for the tandem arrangement especially for initiating the vibrations. The other vibration mechanisms should be related to the special arrangement of the cylinders, hence related to the interference effects.

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