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Relevant bibliographies by topics / Waves2foam

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Conference papers

Academic literature on the topic 'Waves2foam'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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Journal articles on the topic "Waves2foam"

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Chenari, B., S. S. Saadatian, and Almerindo D. Ferreira. "Numerical Modelling of Regular Waves Propagation and Breaking Using Waves2Foam." Journal of Clean Energy Technologies 3, no. 4 (2015): 276–81. http://dx.doi.org/10.7763/jocet.2015.v3.208.

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Wu, Yanling. "Numerical tools to predict the environmental loads for offshore structures under extreme weather conditions." Modern Physics Letters B 32, no. 12n13 (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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Conde, J. M. P. "COMPARISON OF DIFFERENT METHODS FOR GENERATION AND ABSORPTION OF WATER WAVES." Revista de Engenharia Térmica 18, no. 1 (2019): 71. http://dx.doi.org/10.5380/reterm.v18i1.67053.

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The knowledge of water wave characteristics (generation, propagation, transformation and breaking) is fundamental for hydrodynamic studies and the design of ocean, coastal and port structures. In addition to the small-scale experimental studies, the use of numerical models is also a very important tool in hydrodynamic studies. To have reliable numerical results a proper validation is required. The main objective of this paper is to compare different methods of wave generation and wave absorption in a numerical flume, and to find what is the most suited to simulate non-breaking regular wave pro

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Yan, Mingwei, Xin Ma, Wei Bai, Zaibin Lin, and Yibin Li. "Numerical Simulation of Wave Interaction with Payloads of Different Postures Using OpenFOAM." Journal of Marine Science and Engineering 8, no. 6 (2020): 433. http://dx.doi.org/10.3390/jmse8060433.

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A three-dimensional numerical wave tank (NWT) is established with Open Source Field Operation and Manipulation (OpenFOAM) software and waves2foam to investigate wave interaction with payloads with different postures in the process of offshore lifting or lowering. Numerical results of regular wave interaction with a vertically suspending cylinder are presented first for validation by comparison with the published data. A series of simulation experiments are carried out, and the forces and the moments exerted by the regular waves on a fixed suspending cylinder payload and a fixed suspending cubo

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Conde, J. M. P., P. T. S. Roberto, and C. J. E. M. Fortes. "WAVE PROPAGATION ON A FLUME: NUMERICAL SIMULATION." Revista de Engenharia Térmica 14, no. 1 (2015): 95. http://dx.doi.org/10.5380/reterm.v14i1.62120.

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This paper presents the numerical simulations done by using the waves2Foam, an OpenFOAM® library, to simulate the propagation of regular waves without breaking in a three-dimensional flume. The numerical code solves the unsteady Navier-Stokes equations and uses a Volume-of-Fluid (VoF) method to identify the free-surface. A regular incident wave with a 1.5s period and 0.1m wave height was considered. This is one of the conditions, from the wide range of wave flume tests conducted at the National Laboratory for Civil Engineering (LNEC), whose objective was to analyze the hydrodynamics of wave tr

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Jiang, Changbo, Yang Yang, and Bin Deng. "Study on the Nearshore Evolution of Regular Waves under Steady Wind." Water 12, no. 3 (2020): 686. http://dx.doi.org/10.3390/w12030686.

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We present a study on regular wave propagation on a sloping bed under the action of steady wind, which is of a great significance to complement and replenish the interaction mechanisms of nearshore wave and wind. Physical experiments were conducted in a wind-wave flume, and the corresponding numerical model was constructed based on the solver Waves2FOAM in OpenFOAM, with large-eddy simulation (LES) used to investigate the turbulent flow. The comparisons between the measured and calculated results of the free surface elevation and flow velocity indicated that the numerical model could predict t

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Lee, Sang Bong. "Response of a Circular Cylinder Wake to Periodic Wave Excitations." Journal of Fluids Engineering 140, no. 6 (2018). http://dx.doi.org/10.1115/1.4039032.

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Two-dimensional (2D) numerical simulations of multiphase flows past a circular cylinder close to free surface waves were performed to investigate an interaction of vortex formation around a cylinder with periodic waves by utilizing waves2Foam. The lock-on responses of lift coefficient at low frequencies were lower than those of the natural response due to the existence of “out-of-phase” between the fluctuations of lift coefficient by vortex formation and the vertical force fluctuations by wave motions. The resonant effect of an external excitation by the periodic waves on the lift coefficient

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Liu, Cong, Jianhua Wang, and Decheng Wan. "CFD Simulations of Self-Propulsion and Turning Circle Maneuver up to 90º of Ship in Waves." Journal of Ship Research, August 24, 2020, 1–14. http://dx.doi.org/10.5957/josr.09180083.

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In the present work, a Reynolds-Averaged Navier-Stokes (RANS)-overset method is used to numerically investigate self-propulsion and turning circle maneuver in waves for a container ship. A computational fluid dynamics (CFD) solver naoe-FOAM-SJTU is used for the numerical computations of the fully appended Duisburg Test Case ship model. Overset grids are used to handle the motions of the ship hull appended with the propeller and the rudder. Open source toolbox waves2Foam is used to prevent wave reflection in the computational domain. The current numerical method is validated by comparing the sh

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Dissertations / Theses on the topic "Waves2foam"

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Moreira, Tiago Marchão. "Contribuição para a validação do código numérico OpenFOAM em escoamentos com superfície livre." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8551.

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Dissertação para obtenção do Grau de Mestre em Engenharia Mecânica<br>Pretendeu-se com este trabalho explorar o potencial do código numérico OpenFOAM, no estudo de problemas de aerodinâmica e hidrodinâmica. Na parte da aerodinâmica estudou-se o caso do escoamento bidimensional estacionário no interior de uma cavidade utilizando o simpleFoam; os erros iterativo e de convergência, foram calculados e posteriormente comparados com os resultados obtidos por outros códigos numéricos. Foi simulado o escoamento bidimensional não estacionário em torno de uma placa plana perpendicular ao escoamento, u

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Tan, Loh Teng Young. "Assessments of wave-structure interactions for an oscillating wave surge converter using CFD." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/12230.

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This thesis is concerned with the use of the open source computational fluid dynamics (CFD) software package, OpenFOAM® for predicting and analysing the behaviour of a near-shore oscillating wave surge converter (OWSC), when subject to various types of ocean wave conditions in a numerical wave tank (NWT). OpenFOAM® which utilises a Finite Volume Method (FVM) is used to solve the incompressible, Reynolds Averaged Navier-Stokes (RANS) equations for a two-phase fluid, based on a Volume of Fluid (VOF) phase-fraction approach to capture the interface between the air and water phases. Preliminary st

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Afonso, Diogo José Seita. "Simulação numérica da interação de ondas com um quebra-mar poroso utilizando o código OpenFoam." Master's thesis, 2014. http://hdl.handle.net/10362/14660.

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O principal objetivo desta dissertação é explorar o potencial do código OpenFoam, no estudo de problemas de engenharia costeira, mais especificamente a interação de ondas com quebra-mares porosos. Neste sentido, inicialmente é realizada a validação do código numérico porousInterFoam, onde é estudada a dependência de malha e de modelos de turbulência. Conclui-se que os resultados numéricos obtidos apresentam uma boa correlação com os experimentais. Em seguida é feita uma comparação com outros códigos numéricos, nomeadamente o porousWaveFoam e o IHFOAM onde se verificam resultados idênticos.

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Roberto, Paulo Tiago Semanas. "Simulação numérica da propagação e rebentação de ondas utilizando o código OpenFoam." Master's thesis, 2014. http://hdl.handle.net/10362/14431.

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Esta dissertação teve o intuito de validar o código numérico do OpenFoam para problemas na área da hidrodinâmica e propagação de ondas. Para a geração de ondas através do código numérico recorreu-se ao solver Waves2Foam, uma ferramenta do OpenFoam baseada no InterFoam, solver baseado no método VoF (Volume of fluid) com a implementação de zonas de relaxamento para a geração e dissipação da energia das ondas. Os casos simulados nesta dissertação tiveram o objectivo de testar a ferramenta para diferentes condições de propagação de ondas e diferentes teorias. Assim é apresentado um caso bidimens

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Conference papers on the topic "Waves2foam"

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Li, Haoran, and Erin E. Bachynski. "Numerical Simulation of Fully Nonlinear Interaction Between Regular and Irregular Waves and a 2D Floating Body." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96680.

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Abstract A fully nonlinear Navier-Stokes/VOF numerical wave tank, developed within the open-source CFD toolbox OpenFOAM, is used to investigate the response of a moored 2D floating body to nonlinear wave loads. The waveDyMFoam solver, developed by extending the interDyMFoam solver of the OpenFOAM library with the waves2Foam package, is applied. Furthermore, a simple linear spring is implemented to constrain the body motion. An efficient domain decomposition strategy is applied to reduce the computational time of irregular wave cases. The numerical results are compared against the results from

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Pinguet, Romain, Sam Kanner, Michel Benoit, and Bernard Molin. "Modeling the Dynamics of Freely-Floating Offshore Wind Turbine Subjected to Waves With an Open-Source Overset Mesh Method." In ASME 2021 3rd International Offshore Wind Technical Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/iowtc2021-3536.

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Abstract The aim of this study is to develop a viscous numerical wave tank using a coupled solver between the wave generation and absorption toolbox waves2Foam, developed by Jacobsen et al. [1] and the overset method built in the open source CFD software OpenFOAM©. This wave tank can be used to analyze the behavior of Floating Offshore Wind Turbine (FOWT) in nonlinear waves. A mesh convergence analysis is presented on a simple 2D case in order to validate the CFD model. The results are compared to experimental data from the literature and show good agreement. The response of a floater develope

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Liu, Shengnan, Muk Chen Ong, Charlotte Obhrai, and Sopheak Seng. "Numerical Simulations of Regular and Irregular Wave Forces on a Horizontal Semi-Submerged Cylinder." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61405.

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Two-dimensional (2D) numerical simulations have been performed using OpenFOAM (an open source CFD software package [1]) and waves2Foam (an OpenFOAM based add-on library for wave generations and absorption [2]) to investigate free surface waves past one fixed horizontally semi-submerged cylinder. The 2-D simulations are carried out by solving Navier-Stokes equations which are discretized based on finite volume method (FVM). Volume of Fluid (VOF) method is employed to capture the free surface in the numerical wave tank. Validation studies have been performed by comparing the numerical results of

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4

Wang, Jianhua, and Decheng Wan. "Direct Simulations of Turning Circle Maneuver in Waves Using RANS-Overset Method." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78376.

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In the present work, a RANS-overset method is used to numerically investigate turning circle maneuver in waves for a twin-screw ship. CFD solver naoe-FOAM-SJTU is used for the numerical computations of the fully appended ONR Tumblehome ship model. Overset grids are used to fully discretize the ship hull, twin propellers and rudders. The simulation of turning circle maneuver is carried out at constant propeller rotational speed with 35° rudder deflection. Open source toolbox waves2Foam is utilized to generate desired waves for the moving computational domain. Predicted ship trajectory and 6DoF

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Ghadirian, Amin, Henrik Bredmose, Signe Schløer, and Martin Dixen. "Extreme Wave Impacts on Monopiles: Re-Analysis of Experimental Data by a Coupled CFD Solver." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61727.

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Two different numerical models, OceanWave3D and a coupled solver, OceanWave3D-OpenFOAM (Waves2Foam), are used to reproduce extreme events in one sea state. The events are chosen as, the measured event that generates the largest peak moment (exceedance probability of 0.05%) and one event with a slightly smaller peak moment (exceedance probability of 0.3%). Time series of free surface elevation, depth integrated forces, bending moment at the sea bed and pressure time series at 5 different heights on the cylinder are compared for two events between the measurements and the numerical models. The n

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Zhuang, Yuan, and Decheng Wan. "Fully Coupled Analysis of Ship Motion and Sloshing Tanks in Regular and Irregular Waves." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78378.

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Fully coupled analysis of ship motion and sloshing tank in waves is essential for floating structures which store and transports natural gas. For partially filled tanks would generate violent sloshing due to external wave excitation, and the sloshing flow can consequently affect ship motion. Therefore, how to evaluate ship motion and sloshing phenomenon in tank is of great importance, especially under real sea state, when wave induced sloshing would be more complex than that under linear wave condition. In the present work, a CFD-based method is applied to simulate both external wave field and

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El Safti, Hisham, Lisham Bonakdar, and Hocine Oumeraci. "A Hybrid 2D-3D CFD Model System for Offshore Pile Groups Subject to Wave Loading." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23636.

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A hybrid 2D-3D CFD model is developed for studying water wave loads on a slender pile in a pile group. In the hybrid model approach, a one-way link is established between a model for the far-field and another for studying the fluid-structure interaction in the near field. In the far-field a 2D incompressible Navier-Stokes multiphase solver is considered for the proper reproduction of phase-focused (freak) waves produced in physical experiments. The near-field model is a multiphase 3D CFD model that utilizes compressible Navier-Stokes equations to enhance the simulation of entrapped air compres

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Clément, Constance, Pauline Bozonnet, Guillaume Vinay, Adria Borras Nadal, Philippe Pagnier, and Julien Réveillon. "Numerical Wave Tank Including a Fixed Vertical Cylinder Subjected to Waves, Towards the Investigation of Floating Offshore Wind Turbine Hydrodynamics." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18797.

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Abstract Specific engineering tools are used to design Floating Offshore Wind Turbines (FOWT). These so-called aero-hydro-servo-elastic solvers simulate the coupled behaviour of the turbine subjected to wind with the floater motion due to waves, including elasticity of the whole structure. The implemented hydrodynamic forces rely on a strong Oil&Gas background and include potential flow theory and empirical laws, such as Morison forces. The undergoing study aims at re-evaluating the validity range of such theories, when applied to FOWT. To do so, CFD simulations will be run to model wave p

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Zhang, Xiantao, Scott Draper, Hugh Wolgamot, Wenhua Zhao, and Liang Cheng. "Numerical Investigation of Effects of Bow Flare Angle on Greenwater Overtopping a Fixed Offshore Vessel." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77487.

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The effect of bow flare angle on greenwater overtopping is numerically investigated using CFD with a VOF surface capturing scheme. A two dimensional fixed rectangular box with a flare angle is adopted to represent a Floating, Production, Storage and Offloading Unit (FPSO) with flare. Deep water conditions are assumed. The incident waves are focused wave groups based on the New Wave formulation, which represents the most probable free surface elevation around a large crest and includes much of the spectral properties of the underlying random sea state. Bow flare angles of 10, 30 and 50 degrees

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