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Zhou Yang, Yuwang Xu, Jionglin Jing, Xuepeng Fu, Bofu Wang, Haojie Ren, Mengmeng Zhang and Tongxiao Sun
Particle image velocimetry (PIV) is a widely used experimental technique in ocean engineering, for instance, to study the vortex fields near marine risers and the wake fields behind wind turbines or ship propellers. However, the flow fields measured usin...
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Souhail Maazioui, Imad Kissami, Fayssal Benkhaldoun and Driss Ouazar
In this paper, an innovative methodology to handle the numerical simulation of viscoplastic flows is proposed based on a multigrid initialization algorithm in conjunction with the SIMPLE procedure. The governing equations for incompressible flow, which c...
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Aminat Uzdenova
Electromembrane processes underlie the functioning of electrodialysis devices and nano- and microfluidic devices, the scope of which is steadily expanding. One of the main aspects that determine the effectiveness of membrane systems is the choice of the ...
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Filippo Zanetti and Luca Bergamaschi
We review a number of preconditioners for the advection-diffusion operator and for the Schur complement matrix, which, in turn, constitute the building blocks for Constraint and Triangular Preconditioners to accelerate the iterative solution of the discr...
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Elena Tyatyushkina, Andrey Kozelkov, Andrey Kurkin, Efim Pelinovsky, Vadim Kurulin, Kseniya Plygunova and Dmitry Utkin
Verification results for the LOGOS software package as applied to numerical simulations of tsunami waves are reported. The module of the LOGOS software package that is used for tsunami simulations is based on the numerical solution of three-dimensional N...
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Jasna Prpic-Or?ic, Marko Valcic and Zoran Carija
The estimation of wind loads on ships and other marine objects represents a continuous challenge because of its implication for various aspects of exposed structure exploitation. An extended method for estimating the wind loads on container ships is pres...
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Yaroslav Doroshenko,Ihor Rybitskyi
Pág. 28 - 34
CFD simulation investigated turbulent flows in equal gas pipeline tees, in which the gas flow completely moves from the main line to the branch. The study was performed for tees of different geometry ? stamped with different bending radii of the transiti...
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Xingyue Ren, Fangjie Xiong, Ke Qu and Norimi Mizutani
In order to numerically investigate the free surface flow evolution in a cylindrical tank, a regular structured grid system in the cylindrical coordinates is usually applied to solve control equations based on the incompressible two-phase flow model. Sin...
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Hermann Knaus, Martin Hofsäß, Alexander Rautenberg and Jens Bange
A model for the simulation of wind flow in complex terrain is presented based on the Reynolds averaged Navier?Stokes (RANS) equations. For the description of turbulence, the standard k-e, the renormalization group (RNG) k-e, and a Reynolds stress turbule...
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Renzo Arina
The propagation of small perturbations in complex geometries can involve hydrodynamic-acoustic interactions, coupling acoustic waves and vortical modes. A propagation model, based on the linearized Navier?Stokes equations, is proposed. It includes the me...
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Fedor V. Shugaev, Dmitri Y. Cherkasov and Oxana A. Solenaya
Acoustic radiation emitted by three-dimensional (3D) vortex rings in air has been investigated on the basis of the unsteady Navier?Stokes equations. Power series expansions of the unknown functions with respect to the initial vorticity which is supposed ...
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Weizhi Wang, Arun Kamath, Tobias Martin, Csaba Pákozdi and Hans Bihs
Modern design for marine and coastal activities places increasing focus on numerical simulations. Several numerical wave models have been developed in the past few decades with various techniques and assumptions. Those numerical models have their own adv...
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Alberto Zingaro and László Könözsy
Microfluidics is a multidisciplinary area founding applications in several fields such as the aerospace industry. Microelectromechanical systems (MEMS) are mainly adopted for flow control, micropower generation and for life support and environmental cont...
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Alberto Zingaro and László Könözsy
Microfluidics is a multidisciplinary area founding applications in several fields such as the aerospace industry. Microelectromechanical systems (MEMS) are mainly adopted for flow control, micropower generation and for life support and environmental cont...
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Pavel Ryzhakov and Julio Marti
The fractional step method is a technique that results in a computationally-efficient implementation of Navier?Stokes solvers. In the finite element-based models, it is often applied in conjunction with implicit time integration schemes. On the other han...
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Paran Pourteimouri and Kourosh Hejazi
An integrated two-dimensional vertical (2DV) model was developed to investigate wave interactions with permeable submerged breakwaters. The integrated model is capable of predicting the flow field in both surface water and porous media on the basis of th...
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Sierra Legare and Marek Stastna
RANS simulations have been broadly used to investigate turbulence in the oceans and atmosphere. Within these environments there are a multitude of tracers undergoing reactions (e.g., phytoplankton growth, chemical reactions). The distribution of these re...
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Jiao Zhang, Zhangyi Mi, Wen Wang, Zhanbin Li, Huilin Wang, Qingjing Wang, Xunle Zhang and Xinchun Du
Aquatic submerged vegetation is widespread in rivers. The transverse distribution of flow velocity in rivers is altered because of the vegetation. Based on the vegetation coverage, the cross-section of the ecological channels can be divided into the non-...
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Francesco Gallerano, Giovanni Cannata and Federica Palleschi
A three-dimensional numerical study of the hydrodynamic effect produced by a system of submerged breakwaters in a coastal area with a curvilinear shoreline is proposed. The three-dimensional model is based on an integral contravariant formulation of the ...
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