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On the coupling of wave and three-dimensional circulation models: Choice of theoretical framework, practical implementation and adiabatic tests

Anne-Claire Bennis, Fabrice Ardhuin, Franck Dumas
2011 Ocean Modelling  
These errors are independent of the slope for the inviscid case, and are still significant when a realistic vertical mixing is applied.  ...  So far, only three-dimensional wave models have been able to provide these estimates, and all published theories based on the simpler Airy theory are not consistent at the leading order, because they ignore  ...  Marsaleix for his proof-reading and advice. A-C.  ... 
doi:10.1016/j.ocemod.2011.09.003 fatcat:nasjpmw7c5f7xdvf4hv6vioy6y

Development of the CSOMIO Coupled Ocean-Oil-Sediment- Biology Model

Dmitry S. Dukhovskoy, Steven L. Morey, Eric P. Chassignet, Xu Chen, Victoria J. Coles, Linlin Cui, Courtney K. Harris, Robert Hetland, Tian-Jian Hsu, Andrew J. Manning, Michael Stukel, Kristen Thyng (+1 others)
2021 Frontiers in Marine Science  
The oil model also includes surface evaporation and surface wind drift. A novel component of the CSOMIO model is two-way Lagrangian-Eulerian mapping of the oil characteristics.  ...  The oil plume model is based on a Lagrangian approach that describes the oil plume dynamics including advection and diffusion of individual Lagrangian elements, each representing a cluster of oil droplets  ...  ACKNOWLEDGMENTS We thank Tracy Ippolito (FSU) for proofreading the manuscript and for the administrative support during the CSOMIO project.  ... 
doi:10.3389/fmars.2021.629299 fatcat:ncnkv72fezal5bexjedm6eqk7q

Computational fluid dynamics applied to gas-liquid contactors

E. Delnoij, J.A.M. Kuipers, W.P.M. van Swaaij
1997 Chemical Engineering Science  
In addition, a mixed Eulerian Lagrangian model and a volume tracking model, both developed at Twente University, will be discussed.  ...  This 'hierarchy of models' consists of a Eulerian Eulerian two fluid model, a Eulerian-Lagrangian discrete bubble model and a Volume Tracking or Marker Particle model.  ...  In this respect a model that combines the features of a Volume Tracking method and the mixed Eulerian-Lagrangian method deserves attention.  ... 
doi:10.1016/s0009-2509(97)00268-6 fatcat:phiexm63mrcejoiuzrpknu4mvm

Collisional growth in a particle-based cloud microphysical model: insights from column model simulations using LCM1D (v1.0)

Simon Unterstrasser, Fabian Hoffmann, Marion Lerch
2020 Geoscientific Model Development  
the droplet ensemble to be well-mixed in a predefined three-dimensional grid box (WM3D), while the second variant considers the (sub-grid) vertical position of the SIPs, reducing the well-mixed assumption  ...  to a two-dimensional, horizontal plane (WM2D).  ...  We thank Lian-Ping Wang and Andreas Bott for providing box model versions of their collection algorithms.  ... 
doi:10.5194/gmd-13-5119-2020 fatcat:m5thqlwrvjexvdz36y57ey5goa

Stokes drift

T. S. van den Bremer, Ø. Breivik
2017 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences  
ØB would like to acknowledge support from CMEMS COPERNICUS through the WAVE2NEMO contract as well as from the Research Council of Norway through the projects RETROSPECT (grant no 244262) and CIRFA (grant  ...  to fully resolved three-dimensional models Uchiyama et al., 2010) .  ...  In particular, there is a rich and varied literature on other wave effects that require inclusion in Eulerian ocean and near-shore hydrodynamic models.  ... 
doi:10.1098/rsta.2017.0104 pmid:29229803 fatcat:nmwydxmelzbozcypygvjrmcpfa

Lagrangian ocean analysis: Fundamentals and practices

Erik van Sebille, Stephen M. Griffies, Ryan Abernathey, Thomas P. Adams, Pavel Berloff, Arne Biastoch, Bruno Blanke, Eric P. Chassignet, Yu Cheng, Colin J. Cotter, Eric Deleersnijder, Kristofer Döös (+23 others)
2018 Ocean Modelling  
Lagrangian analysis is a powerful way to analyse the output of ocean circulation models and other ocean velocity data such as from altimetry.  ...  In the Lagrangian approach, large sets of virtual particles are integrated within the three-dimensional, time-evolving velocity fields.  ...  We also wish to thank all the scientists, researchers and programmers who built the Ocean General Circulation and Lagrangian tracking models over the past decades.  ... 
doi:10.1016/j.ocemod.2017.11.008 fatcat:5qelzothbnh6dgbdtf7xensqae

Hydrodynamic simulation of oil sand multiphase flow in an at-face slurry system

E. Zheng, J. Szymanski, T. Joseph, R. Hall, M. Curley
2017 CIM Journal  
Results indicate that Granular-Eulerian Multiphase model is reasonably effective in predicting the pressure drop of the at face slurry loop (with a percentage error in the range ±10%) at all the solid  ...  Experimental and modelling results are compared to test the accuracy of CFD modelling to predict friction loss in the flexible pipeline system.  ...  Mathematical Model Geometry and Meshing To conduct this study, three three-dimensional horizontal pipes are created using Ansys-Geometry.  ... 
doi:10.15834/cimj.2017.20 fatcat:7vzut2skk5dgrpxpfpja3enw3u

CFD-aided modelling of activated sludge systems – A critical review

Anna M. Karpinska, John Bridgeman
2016 Water Research  
mixing and mass transfer in AS tanks are identified and discussed.  ...  Examples and methods of coupling of CFD data with biokinetics, accounting for the actual flow field and its impact on the oxygen mass transfer and yield of the biological processes occurring in the aeration  ...  Here, the particles can exchange momentum, mass, and energy with the fluid phase.  ... 
doi:10.1016/j.watres.2015.11.008 pmid:26615385 fatcat:uv4uyrzqnrgtrnzggmrfvrlrgi

Dense gas-particle suspension upward flow used as heat transfer fluid in solar receiver: PEPT experiments and 3D numerical simulations

Renaud Ansart, Pablo García-Triñanes, Benjamin Boissière, Hadrien Benoit, Jonathan P.K. Seville, Olivier Simonin
2017 Powder Technology  
Both numerical predictions and PEPT measurements describe an upward flow at the centre of the transport tube with a back-mixing flow near the wall which influences the heat transfer mechanism.  ...  Comparisons between experiment and computation were carried out for the radial profiles of the solid volume fraction, and vertical and radial time-averaged and variance velocities of solid, and demonstrating  ...  This work was granted access to the HPC resources of CALMIP under the allocation P1132 and CINES under the allocation gct6938 made by GENCI.  ... 
doi:10.1016/j.powtec.2016.11.006 fatcat:z76alqnmcfavpf5f3eyt6owolu

A Stabilised Nodal Spectral Element Method for Fully Nonlinear Water Waves, Part 2: Wave-body interaction [article]

A. P. Engsig-Karup and C. Monteserin and C. Eskilsson
2017 arXiv   pre-print
We present a new stabilised and efficient high-order nodal spectral element method based on the Mixed Eulerian Lagrangian (MEL) method for general-purpose simulation of fully nonlinear water waves and  ...  Numerical experiments revisiting known benchmarks are presented, and highlights that modelling using a high-order spectral element method provides excellent accuracy in prediction of nonlinear and dispersive  ...  Conclusions We have presented a new stabilised nodal spectral element model for simulation of fully nonlinear water wave propagation based on a Mixed Eulerian Lagrangian (MEL) formulation.  ... 
arXiv:1703.09697v1 fatcat:xcaniur6lnfdhlxvybgshylnmu

The Impact of Swirls on Slurry Flows in Horizontal Pipelines

Hongbo Shi, Jianping Yuan, Yalin Li
2021 Journal of Marine Science and Engineering  
Since the internal flow is a liquid-solid-solid mixture, a steady-state three-dimensional Eulerian-Eulerian multiphase approach in conjunction with the k-ω SST turbulence model is implemented for numerical  ...  It is clearly revealed the transition of flow regime from heterogeneous to pseudo-homogeneous with the increasing level of swirl intensity at inlet.  ...  Acknowledgments: A huge thanks is due to the editor and reviewers for their valuable comments to improve the quality of this paper.  ... 
doi:10.3390/jmse9111201 fatcat:njzsqvdqfbhlfixlayaxhfwgcm

Modelling the population dynamics of Calanus in the Fair Isle current of northern Scotland

M. Heath, W. Robertson, J. Mardaljevic, W.S.G. Gurney
1997 Journal of Sea Research  
three-dimensional hydrodynamic model of the northwest European shelf.  ...  energetic mixing zone, and subsequent re-establishment of stratification with distance downstream.  ...  ., 1995 Comer and O'Hara, 1986 Hansen et al., 1990 Marshall and Orr, l955a Hansen et al., 1990 Hansen et al., 1990 Assumed Comer et al., 1965 Marshall and On; l955b Marshall and On; l955b Assumed  ... 
doi:10.1016/s1385-1101(97)00047-6 fatcat:unbqdonmx5h5vg53vkbkmlvjkq

ReALE: A reconnection-based arbitrary-Lagrangian–Eulerian method

Raphaël Loubère, Pierre-Henri Maire, Mikhail Shashkov, Jérôme Breil, Stéphane Galera
2010 Journal of Computational Physics  
We present a new reconnection-based Arbitrary Lagrangian Eulerian (ALE) method.  ...  The main elements in a standard ALE simulation are an explicit Lagrangian phase in which the solution and grid are updated, a rezoning phase in which a new grid is defined, and a remapping phase in which  ...  Each particle and its corresponding parcel represent a single material, that is, there is no mixed (containing several materials) parcel. Mass exchange between particles is forbidden.  ... 
doi:10.1016/j.jcp.2010.03.011 fatcat:okk7wpwtcrhmzdfweha3dwdl2u

Lagrangian numerical methods for ocean biogeochemical simulations

Francesco Paparella, Marina Popolizio
2018 Journal of Computational Physics  
We propose two closely--related Lagrangian numerical methods for the simulation of physical processes involving advection, reaction and diffusion.  ...  The methods conserve mass, obey the maximum principle, and allow to tune the strength of the diffusive terms down to zero, while avoiding unwanted numerical dissipation effects.  ...  We have benefited from discussions with Zouhair Lachkar, Olivier Paulis and Marcello Vichi.  ... 
doi:10.1016/j.jcp.2018.01.031 fatcat:grco4ohgijgbnfw4haj4wc55ai

ENERGY CONSERVATION AND GRAVITY WAVES IN SOUND-PROOF TREATMENTS OF STELLAR INTERIORS. II. LAGRANGIAN CONSTRAINED ANALYSIS

Geoffrey M. Vasil, Daniel Lecoanet, Benjamin P. Brown, Toby S. Wood, Ellen G. Zweibel
2013 Astrophysical Journal  
We use Lagrangian variational methods to extend the energy conserving model to a general equation of state, and dub the resulting equation set the Generalized Pseudo-Incompressible (GPI) model.  ...  Here we extend the analysis of equation sets begun in Brown Vasil & Zweibel 2012, which studied anelastic models, to two types of pseudo-incompressible models.  ...  The simulations were carried out with NSF PACI support of NICS and TACC.  ... 
doi:10.1088/0004-637x/773/2/169 fatcat:bsqp4ct7mzgh7o6sl7qgwt2hfe
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