Searched for: subject%3A%22Unstructured%255C%2Bmesh%22
(1 - 14 of 14)
document
Zijlema, M. (author)
This paper discusses the discretization methods that have been commonly employed to solve the wave action balance equation, and that have gained a renewed interest with the widespread use of unstructured grids for third-generation spectral wind-wave models. These methods are the first-order upwind finite difference and first-order vertex...
journal article 2021
document
Rubino, A. (author), Pini, M. (author), Kosec, M. (author), Vitale, S. (author), Colonna, Piero (author)
Fast and accurate computation of thermo-physical properties is essential in computationally expensive simulations involving fluid flows that significantly depart from the ideal gas or ideal liquid behavior. A look-up table algorithm based on unstructured grids is proposed and applied to non-ideal compressible fluid dynamics simulations. The...
journal article 2018
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Kleptsova, O.S. (author), Pietrzak, J.D. (author)
Ice induced variability of tides in the Canadian Arctic Archipelago, including Baffin Bay and Hudson Strait/Hudson Bay system, was studied by means of a new high resolution tidal model. Here we show that the seasonal variations of the tidal constants are significant in the major part of the domain. Month to month changes of the tidal phases...
journal article 2018
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Vallaeys, Valentin (author), Kärnä, Tuomas (author), Delandmeter, Philippe (author), Lambrechts, Jonathan (author), Baptista, António M. (author), Deleersnijder, E.L.C. (author), Hanert, Emmanuel (author)
The Columbia River (CR) estuary is characterized by high river discharge and strong tides that generate high velocity flows and sharp density gradients. Its dynamics strongly affects the coastal ocean circulation. Tidal straining in turn modulates the stratification in the estuary. Simulating the hydrodynamics of the CR estuary and plume...
journal article 2018
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Delandmeter, Philippe (author), Lambrechts, Jonathan (author), Marmorino, George O. (author), Legat, Vincent (author), Wolanski, Eric (author), Remacle, Jean-François (author), Chen, Wei (author), Deleersnijder, E.L.C. (author)
Interaction of tidal flow with a complex topography and bathymetry including headlands, islands, coral reefs and shoals create a rich submesoscale field of tidal jets, vortices, unsteady wakes, lee eddies and free shear layers, all of which impact marine ecology. A unique and detailed view of the submesoscale variability in a part of the...
journal article 2017
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Kleptsova, O. (author)
In this thesis a z?layer unstructured C-grid finite volume hydrostatic model is presented. An efficient and highly scalable implicit technique for the solution of the free surface equation is combined with an Eulerian approach for the advection of momentum. A consistent velocity reconstruc- tion procedure which not only satisfies the continuity...
doctoral thesis 2013
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Terwisscha van Scheltinga, A. (author), Myers, P.G. (author), Pietrzak, J.D. (author)
A new mesh size field is presented that is specifically designed for efficient meshing of highly irregular oceanic domains: archipelagos. The new approach is based on the standard mesh size field that uses the proximity to the nearest coastline. Here, the proximities to the two nearest coastlines are used to calculate the distance between two...
journal article 2012
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Yamazaki, W. (author), Matsushima, K. (author), Nakahashi, K. (author)
Unstructured mesh drag prediction is discussed using a drag decomposition method. This method decomposes total drag into wave, profile, induced and spurious drag components, the latter resulting from numerical diffusion and errors. Computational results show that the method reliably predicts drag and is capable of meaningful drag decomposition....
conference paper 2006
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De Boer, A. (author), Van der Schoot, M.S. (author), Bijl, H. (author)
A new point-by-point mesh movement algorithm is developed for the deformation of unstructured grids. The method is based on using radial basis function, RBFs, to interpolate the displacements of the boundary nodes to the whole flow mesh. A small system of equations has to be solved, only involving the nodes on the boundary of the flow domain....
conference paper 2006
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De Boer, A. (author), Van der Schoot, M.S. (author), Bijl, H. (author)
A new point-by-point mesh movement algorithm is developed for the deformation of unstructured grids. The method is based on using radial basis function, RBFs, to interpolate the displacements of the boundary nodes to the whole flow mesh. A small system of equations has to be solved, only involving the nodes on the boundary of the flow domain....
conference paper 2006
document
Boldarev, A.. (author), Chetverushkin, B.N. (author), Kartasheva, E.L. (author), Gasilov, V.A. (author), D'yachenko, S.V. (author), Olkhovskaya, O.G. (author)
We present a new object-oriented radiative-magnetogasdynamics (RMHD) code based on unstructured grid technology which is expected to be a convenient tool for investigations of plasma dynamics in various pulsed-power facilities. High-performance computing is a proper tool for simulations of complex multiscale nonlinear processes like transient...
conference paper 2006
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Carpentieri, G. (author), Van Tooren, M.J.L. (author), Koren, B. (author)
An optimization framework for aerodynamic design on unstructured meshes has been implemented. It includes a finite volume solver based upon a median-dual discretization, its discrete adjoint, and shape parameterization and mesh moving/deforming algorithms. The framework elements are coupled and linked to a Sequential Quadratic Programming (SQP)...
conference paper 2006
document
Carpentieri, G. (author), Van Tooren, M.J.L. (author), Koren, B. (author)
An optimization framework for aerodynamic design on unstructured meshes has been implemented. It includes a finite volume solver based upon a median-dual discretization, its discrete adjoint, and shape parameterization and mesh moving/deforming algorithms. The framework elements are coupled and linked to a Sequential Quadratic Programming (SQP)...
conference paper 2006
document
Ham, D.A. (author), Pietrzak, J. (author), Stelling, G.S. (author)
A new scheme for the construction on an unstructured grid of the streamlines of the three-dimensional shallow water equations is presented. The qualitative advantages of the scheme, notably closed streamlines and realistic treatment of closed boundaries, are derived and the spatial accuracy is demonstrated. Semi-Lagrangian advection schemes...
journal article 2005
Searched for: subject%3A%22Unstructured%255C%2Bmesh%22
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