Bibliografie tematiche / Offshore structures, CFD

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Letteratura scientifica selezionata sul tema "Offshore structures, CFD"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 12 febbraio 2022

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Articoli di riviste sul tema "Offshore structures, CFD"

1

Vasilyev, Leonid, Konstantinos Christakos, and Brian Hannafious. "Treating Wind Measurements Influenced by Offshore Structures with CFD Methods." Energy Procedia 80 (2015): 223–28. http://dx.doi.org/10.1016/j.egypro.2015.11.425.

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Peric, Milovan, and Volker Bertram. "Trends in Industry Applications of Computational Fluid Dynamics for Maritime Flows." Journal of Ship Production and Design 27, no. 04 (November 1, 2011): 194–201. http://dx.doi.org/10.5957/jspd.2011.27.4.194.

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Abstract (sommario):
This paper surveys developments in Computational Fluid Dynamics (CFD) applications for maritime structures (ships, propellers, and offshore structures) over the past decade. Progress is significant in integrating the process chain, particularly more automated model generation. Increased hardware power and progress in various aspects of the flow solvers allow more sophisticated applications and wider scope of applications. Selected examples taken from industry and research applications show the increasing importance of CFD in earlier design stages.
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A. Rahman, Mohd Asamudin, Muhammad Nadzrin Nazri, Ahmad Fitriadhy, Mohammad Fadhli Ahmad, Erwan Hafizi Kasiman, Mohd Azlan Musa, Fatin Alias, and Mohd Hairil Mohd. "A Fundamental CFD Investigation of Offshore Structures for Artificial Coral Reef Development." CFD Letters 12, no. 7 (July 30, 2020): 110–25. http://dx.doi.org/10.37934/cfdl.12.7.110125.

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Van den Abeele, F., and J. Vande Voorde. "Stability of offshore structures in shallow water depth." International Journal Sustainable Construction & Design 2, no. 2 (November 6, 2011): 320–33. http://dx.doi.org/10.21825/scad.v2i2.20529.

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The worldwide demand for energy, and in particular fossil fuels, keeps pushing the boundaries of offshoreengineering. Oil and gas majors are conducting their exploration and production activities in remotelocations and water depths exceeding 3000 meters. Such challenging conditions call for enhancedengineering techniques to cope with the risks of collapse, fatigue and pressure containment.On the other hand, offshore structures in shallow water depth (up to 100 meter) require a different anddedicated approach. Such structures are less prone to unstable collapse, but are often subjected to highe
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Decorte, Griet, Alessandro Toffoli, Geert Lombaert, and Jaak Monbaliu. "On the Use of a Domain Decomposition Strategy in Obtaining Response Statistics in Non-Gaussian Seas." Fluids 6, no. 1 (January 7, 2021): 28. http://dx.doi.org/10.3390/fluids6010028.

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During recent years, thorough experimental and numerical investigations have led to an improved understanding of dynamic phenomena affecting the fatigue life and survivability of offshore structures, e.g., ringing and springing and extreme wave impacts. However, most of these efforts have focused on modeling either selected extreme events or sequences of highly nonlinear waves impacting offshore structures, possibly overestimating the actual load to be experienced by the structure. Overall, not much has been done regarding short-term statistics. Although clear non-Gaussian statistics and there
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Decorte, Griet, Alessandro Toffoli, Geert Lombaert, and Jaak Monbaliu. "On the Use of a Domain Decomposition Strategy in Obtaining Response Statistics in Non-Gaussian Seas." Fluids 6, no. 1 (January 7, 2021): 28. http://dx.doi.org/10.3390/fluids6010028.

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Abstract (sommario):
During recent years, thorough experimental and numerical investigations have led to an improved understanding of dynamic phenomena affecting the fatigue life and survivability of offshore structures, e.g., ringing and springing and extreme wave impacts. However, most of these efforts have focused on modeling either selected extreme events or sequences of highly nonlinear waves impacting offshore structures, possibly overestimating the actual load to be experienced by the structure. Overall, not much has been done regarding short-term statistics. Although clear non-Gaussian statistics and there
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7

Wu, Yanling. "Numerical tools to predict the environmental loads for offshore structures under extreme weather conditions." Modern Physics Letters B 32, no. 12n13 (May 10, 2018): 1840039. http://dx.doi.org/10.1142/s0217984918400390.

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In this paper, the extreme waves were generated using the open source computational fluid dynamic (CFD) tools — OpenFOAM and Waves2FOAM — using linear and nonlinear NewWave input. They were used to conduct the numerical simulation of the wave impact process. Numerical tools based on first-order (with and without stretching) and second-order NewWave are investigated. The simulation to predict force loading for the offshore platform under the extreme weather condition is implemented and compared.
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Dymarski, Paweł, Ewelina Ciba, and Tomasz Marcinkowski. "Effective Method for Determining Environmental Loads on Supporting Structures for Offshore Wind Turbines." Polish Maritime Research 23, no. 1 (January 1, 2016): 52–60. http://dx.doi.org/10.1515/pomr-2016-0008.

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Abstract This paper presents a description of an effective method for determining loads due to waves and current acting on the supporting structures of the offshore wind turbines. This method is dedicated to the structures consisting of the cylindrical or conical elements as well as (truncates) pyramids of polygon with a large number of sides (8 or more). The presented computational method is based on the Morison equation, which was originally developed only for cylindrically shaped structures. The new algorithm shown here uses the coefficients of inertia and drag forces that were calculated f
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Dervilis, Nikolaos, A. C. W. Creech, A. E. Maguire, Ifigeneia Antoniadou, R. J. Barthorpe, and Keith Worden. "An SHM View of a CFD Model of Lillgrund Wind Farm." Applied Mechanics and Materials 564 (June 2014): 164–69. http://dx.doi.org/10.4028/www.scientific.net/amm.564.164.

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Abstract (sommario):
Reliability of offshore wind farms is one of the key areas for the successful implementation of these renewable power plants in the energy arena. Failure of the wind turbine (WT) in general could cause massive financial losses but especially for structures that are operating in offshore sites. Structural Health Monitoring (SHM) of WTs is essential in order to ensure not only structural safety but also avoidance of overdesign of components that could lead to economic and structural inefficiency. A preliminary analysis of a machine learning approach in the context of WT SHM is presented here; it
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Rahman, Shaikh Atikur, Zubair Imam Syed, John V. Kurian, and M. S. Liew. "Structural Response of Offshore Blast Walls under Accidental Explosion." Advanced Materials Research 1043 (October 2014): 278–82. http://dx.doi.org/10.4028/www.scientific.net/amr.1043.278.

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Adequate blast resistant barriers are requisite to protect personnel and critical systems from the consequences of an accidental explosion and subsequent fire. Many of the blast walls currently installed in offshore structures were designed using simplified calculation approaches like Single Degree of Freedom models (SDOF) as recommended in many design guidelines. Over simplified and idealised explosion load used for response calculation and design of blast wall can lead to inadequate or overdesign of offshore blast walls. Due to lack of presence of a well-accepted design guidelines supported
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Più fonti

Tesi sul tema "Offshore structures, CFD"

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Olaoye, Abiodun Timothy. "CFD simulation of long slender offshore structures at high Reynolds number." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122262.

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Thesis: Ph. D. in Mechanical Engineering and Computation, Massachusetts Institute of Technology, Department of Mechanical Engineering, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 129-131).<br>Slender cylindrical structures are common in many offshore engineering applications such as floating wind turbines and subsea risers. These structures are vulnerable to flow-induced vibrations under certain environmental conditions which impacts their useful life. Flow-induced vibrations have been widely studied both experimentally and numerically especially
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Abdolmaleki, Kourosh. "Modelling of wave impact on offshore structures." University of Western Australia. School of Mechanical Engineering, 2007. http://theses.library.uwa.edu.au/adt-WU2008.0055.

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[Truncated abstract] The hydrodynamics of wave impact on offshore structures is not well understood. Wave impacts often involve large deformations of water free-surface. Therefore, a wave impact problem is usually combined with a free-surface problem. The complexity is expanded when the body exposed to a wave impact is allowed to move. The nonlinear interactions between a moving body and fluid is a complicated process that has been a dilemma in the engineering design of offshore and coastal structures for a long time. This thesis used experimental and numerical means to develop further underst
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Douteau, Louis. "CFD simulation with anisotropic mesh adaptation : application to floating offshore wind turbines." Thesis, Ecole centrale de Nantes, 2020. http://www.theses.fr/2020ECDN0003.

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Le calcul des performances et des efforts appliqués sur une éolienne offshore est actuellement réalisé à l'aide d’outils basés sur des approches quasi-statiques. Ces approches sont intéressantes pour leur vitesse de calcul, elles sont cependant perfectibles suivant la méthode de mise en oeuvre et suivant les cas de chargement étudiés. Une approche alternative consiste à utiliser la modélisation CFD. Cette thèse s’intéresse à des méthodes d’une haute précision, ayant le potentiel de fournir des écoulements et efforts précis. La plateforme logicielle hautement parallélisée ICI-tech est utilisée
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Motamed, Dashliborun Amir. "Performance of multiphase packed-bed reactors and scrubbers on offshore floating platforms: hydrodynamics, chemical reaction, CFD modeling and simulation." Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/30439.

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Les systèmes flottants de production, stockage et de déchargement (FPSO) ont été introduits dans les secteurs d'exploitation des hydrocarbures offshore en tant qu'outils facilement déplaçables pour l’exploitation de champs de pétrole et de gaz de petites ‘a moyenne tailles ou lorsque ceux-ci sont éloignés des côtes ou en eaux profondes. Ces systèmes sont de plus en plus envisagés pour les opérations de traitement et de raffinage des hydrocarbures à proximité des sites d'extraction des réservoirs sous-marins en utilisant des laveurs et des réacteurs à lit fixe embarqués. De nombreuses études da
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Liu, Yuanchuan. "A CFD study of fluid-structure interaction problems for floating offshore wind turbines." Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=30597.

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As one of the fastest growing renewable energy sources, wind energy is playing an increasingly important part in addressing the climate change and energy crisis issues the world is currently facing. The abundance of wind resource in offshore areas makes them a popular choice for turbine installation. In the past few years, several floating wind projects have emerged where wind turbines are installed far offshore in deepwater sites on moored platforms. Compared to land-based or offshore fixed-bottom wind turbines, an FOWT is a fully coupled system where the wind turbine with flexible blades and
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Ercolanelli, Julien. "Étude numérique et expérimentale d'un système couplé stabilisateur et récupérateur d'énergie des vagues Experimental and numerical investigation of sloshing in anti-roll tank using effective gravity angle Experimental and numerical assessment of the performance of a new type passive anti-roll stabilisation system." Thesis, Brest, École nationale supérieure de techniques avancées Bretagne, 2019. http://www.theses.fr/2019ENTA0008.

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Le développement de Geps Techno est basé sur un concept innovant de structure flottante destinée à produire de l'énergie électrique à partir de plusieurs sources d'énergies marines renouvelables dont la source houlomotrice. Le système houlomoteur développé par Geps Techno repose sur la mise en circulation d'eau et la création d'un tourbillon en son sein. En profitant du phénomène de carène liquide, le concept est également déclinable en un système de stabilisation de navire ou de toute autre plateforme flottante. L'objectif à court terme de la société est le développement de cette technologie
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Allsop, Steven Christopher. "Hydrodynamic modelling for structural analysis of tidal stream turbine blades." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/33219.

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The predictable nature of the tides offers a regular, reliable source of renewable energy that can be harnessed using tidal stream turbines (TSTs). The UK's practically extractable tidal stream energy resource has the potential to supply around 7 % of the country's annual electricity demand. As of 2016, the world's first commercial scale arrays have been deployed around the UK and France. The harsh nature of the marine operating environment poses a number of engineering challenges, where the optimal turbine design solution remains under investigation. In this thesis, a numerical model is devel
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Atti di convegni sul tema "Offshore structures, CFD"

1

Kara, M. C., J. Kaufmann, R. Gordon, P. P. Sharma, and J. Y. Lu. "Application of CFD for Computing VIM of Floating Structures." In Offshore Technology Conference. Offshore Technology Conference, 2016. http://dx.doi.org/10.4043/26950-ms.

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2

Jiang, Changqing, Ould el Moctar, and Thomas E. Schellin. "Prediction of Hydrodynamic Damping of Moored Offshore Structures Using CFD." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95935.

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Abstract (sommario):
Abstract Usually, mooring system restoring forces acting on floating offshore structures are obtained from a quasi-static mooring model alone or from a coupled analysis based on potential flow solvers that do not always consider nonlinear mooring-induced phenomena or fluid-structure interactions and the associated viscous damping effects. By assuming that only the mooring system influences the restoring force characteristics, the contribution of mooring-induced damping to total system damping is neglected. This paper presents a technique to predict hydrodynamic damping of moored structures bas
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3

Cho, S., S. Hwang, J. Jung, H. Sung, B. Park, and A. Vazquez-Hernandez. "Estimation of Wind and Current Load on Offshore Structures Using Wind Tunnels and CFD." In Offshore Technology Conference. Offshore Technology Conference, 2018. http://dx.doi.org/10.4043/28771-ms.

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4

Atluri, Sampath, Allan Magee, and Kostas Lambrakos. "CFD as a Design Tool for Hydrodynamic Loading on Offshore Structures." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79502.

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Time-domain numerical integration of the rigid body equations of motion is a popular choice for analyzing the global motions of a single or multi-module floating platform. Potential flow theory cannot accurately account for all the hydrodynamic forces on certain components of the platform. However, for practical analysis, these members can be modeled as Morison members in the time-domain simulations. Computational Fluid Dynamics (CFD) can be used to calculate Morison coefficients for the given flow conditions on the exact geometry of the member. This paper presents the results from CFD simulat
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Holmes, Samuel, Owen H. Oakley, and Yiannis Constantinides. "Simulation of Riser VIV Using Fully Three Dimensional CFD Simulations." In 25th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/omae2006-92124.

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Fully three dimensional computational fluid dynamics (CFD) solutions are combined with structural models of a tensioned riser to predict riser vortex induced motion. The use of three dimensional CFD solutions overcomes many of the shortcomings of combining a series of strip or two dimensional simulations to calculate the fluid forces on the riser. Three dimensional vortex structures are treated correctly and straked risers and variations in angle of attack can be studied directly. The proposed method uses finite element methods that are tolerant of sparse meshes and high element aspect ratios.
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Corson, David, Steve Cosgrove, Paul R. Hays, Yiannis Constantinides, Owen H. Oakley, Harish Mukundan, and Ming Leung. "CFD Based Hydrodynamic Databases for Wake Interference Assessment." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49407.

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The interaction of the wake between pairs of long flexible cylindrical structures is of major consequence in the design of offshore oil and gas production facilities. Modern designs of these facilities often utilize arrays of flexible pipes (risers) extending from the mean water line to the mud-line and then to the subsea reservoir. As ocean currents interact with these structures, wakes are formed at the upstream structure and propagate to the downstream structure (a perturbed flow-field) resulting in a modified force on the downstream structure. This effect, known as the shielding effect, ne
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7

Lu, Xin, Pankaj Kumar, Anand Bahuguni, and Yanling Wu. "A CFD Study of Focused Extreme Wave Impact on Decks of Offshore Structures." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23804.

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Abstract (sommario):
The design of offshore structures for extreme/abnormal waves assumes that there is sufficient air gap such that waves will not hit the platform deck. Due to inaccuracies in the predictions of extreme wave crests in addition to settlement or sea-level increases, the required air gap between the crest of the extreme wave and the deck is often inadequate in existing platforms and therefore wave-in-deck loads need to be considered when assessing the integrity of such platforms. The problem of wave-in-deck loading involves very complex physics and demands intensive study. In the Computational Fluid
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Sohn, J. M. "Computational Modelling of Interaction Between CFD And FEA Simulations Under Gas Explosion Loads." In ICSOT Korea 2012 - Developments in fixed and floating offshore structures. RINA, 2012. http://dx.doi.org/10.3940/rina.icsot.2012.15.

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9

Tralli, Aldo, Arnout C. Bijlsma, Wilbert te Velde, and Pieter de Haas. "CFD Study on Free-Surface Influence on Tidal Turbines in Hydraulic Structures." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41187.

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In order to estimate the impact on energy production and environment of tidal turbines placed in or near hydraulic structures like discharge sluices or storm surge barriers, a Computational Fluid Dynamics (CFD) study has been carried out on the relation between (head) loss induced by the turbines and their gross power production. CFD computations have been performed for Tocardo T2 turbines, using STAR-CCM+. Simulations of a single turbine in free flow conditions compare favorably with results of Blade Element Momentum (BEM) computations, in terms of torque and thrust. This BEM method model had
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Constantinides, Yiannis, Owen H. Oakley, and Samuel Holmes. "CFD High L/D Riser Modeling Study." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29151.

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Abstract (sommario):
Fully three dimensional fluid flow simulations are used with a simple structural model to simulate very long risers. This method overcomes many shortcomings of methodologies based on two dimensional flow simulations and can correctly include the effects of three dimensional structures such as strakes, buoyancy modules and catenary riser shapes. The method is benchmarked against laboratory and offshore experiments with model risers of length to diameter ratios up to 4,000. RMS values of vortex induced vibration motions are shown to be in good agreement with measurements. The resources needed to
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