International Journal for Numerical Methods in Fluids
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A numerical study of the propulsive efficiency of a flapping hydrofoilAbstract A computational fluid dynamics study of the swimming efficiency of a two‐dimensional flapping hydrofoil at a Reynolds number of 1100 is presented. The model accounts fully for viscous effects that are particularly important when flow separation occurs. The model uses an arbitrary Lagrangian–Eulerian (ALE) method to track the moving boundaries of oscillatory... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 42 Số 5 - Trang 493-526 - 2003
An integrated modelling system for coastal area dynamicsAbstract Two‐dimensional initial‐boundary value problems are considered for the shallow water equations and the equation of advection and dispersion of pollutants. The problems are solved in curvilinear boundary fitted co‐ordinates. The transformed equations are integrated on a regular grid by the semi‐implicit and implicit finite difference methods. Based on the nu... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 19 Số 3 - Trang 181-206 - 1994
Flutter instability prediction techniques for bridge deck sectionsAbstract In order to investigate the fluid/structure interaction of a bridge deck in a cross wind, a two‐dimensional hp/Spectral fluid solver has been modified to incorporate a body undergoing translational and rotational motion. A moving frame of reference is attached to the body to utilize the efficiency of a fixed mesh solver. The critical reduced velocity at whi... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 43 Số 10-11 - Trang 1239-1256 - 2003
Correlated observation errors in data assimilationAbstract Data assimilation provides techniques for combining observations and prior model forecasts to create initial conditions for numerical weather prediction (NWP). The relative weighting assigned to each observation in the analysis is determined by its associated error. Remote sensing data usually has correlated errors, but the correlations are typically ignore... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 56 Số 8 - Trang 1521-1527 - 2008
The Multidimensional Optimal Order Detection method in the three‐dimensional case: very high‐order finite volume method for hyperbolic systemsSUMMARY The Multidimensional Optimal Order Detection (MOOD) method for two‐dimensional geometries has been introduced by the authors in two recent papers. We present here the extension to 3D mixed meshes composed of tetrahedra, hexahedra, pyramids, and prisms. In addition, we simplify the u2 detection process previously developed and show on a relevant set of numeri... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 73 Số 4 - Trang 362-392 - 2013
High‐order CFD methods: current status and perspectiveSUMMARY After several years of planning, the 1st International Workshop on High‐Order CFD Methods was successfully held in Nashville, Tennessee, on January 7–8, 2012, just before the 50th Aerospace Sciences Meeting. The American Institute of Aeronautics and Astronautics, the Air Force Office of Scientific Research, and the German Aerospace Center provided much neede... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 72 Số 8 - Trang 811-845 - 2013
The QUICK scheme is a third‐order finite‐volume scheme with point‐valued numerical solutionsAbstract In this paper, we resolve the ever‐present confusion over the Quadratic Upwind Interpolation for Convective Kinematics (QUICK) scheme: it is a second‐order scheme or a third‐order scheme. The QUICK scheme, as proposed in the original reference (B. P. Leonard, Comput. Methods. Appl. Mech. Eng., 19, (1979), 59‐98), is a third‐order (not second‐order) finite‐v... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 93 Số 7 - Trang 2311-2338 - 2021
High‐order stable interpolations for immersed boundary methodsAbstract The analysis and improvement of an immersed boundary method (IBM) for simulating turbulent flows over complex geometries are presented. Direct forcing is employed. It consists in interpolating boundary conditions from the solid body to the Cartesian mesh on which the computation is performed. Lagrange and least squares high‐order interpolations are consider... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 52 Số 11 - Trang 1175-1193 - 2006
Natural convection in a square cavity: A comparison exerciseAbstract A number of contributed solutions to the problem of laminar natural convection in a square cavity have been compared with what is regarded as a solution of high accuracy. The purposes of this exercise have been to confirm the accuracy of the bench mark solution and to provide a basis for the assessment of the various methods and computer codes used to obtai...
International Journal for Numerical Methods in Fluids - Tập 3 Số 3 - Trang 227-248 - 1983
Analysis of a second‐order upwind method for the simulation of solute transport in 2D shallow water flowAbstract A two‐dimensional model for the simulation of solute transport by convection and diffusion into shallow water flow over variable bottom is presented. It is based on a finite volume method over triangular unstructured grids. A first‐order upwind technique, a second order in space and time and an extended first‐order method are applied to solve the non‐diffus... ... hiện toàn bộ
International Journal for Numerical Methods in Fluids - Tập 56 Số 6 - Trang 661-686 - 2008
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