Download e-book for kindle: Computational Fluid Dynamics (Chapman and Hall CRC by Frederic Magoules

By Frederic Magoules

ISBN-10: 1439856613

ISBN-13: 9781439856611

Exploring new adaptations of classical equipment in addition to fresh ways showing within the box, Computational Fluid Dynamics demonstrates the wide use of numerical strategies and mathematical types in fluid mechanics. It offers quite a few numerical tools, together with finite quantity, finite distinction, finite point, spectral, smoothed particle hydrodynamics (SPH), mixed-element-volume, and unfastened floor circulation. Taking a unified standpoint, the ebook first introduces the root of finite quantity, weighted residual, and spectral methods. The participants current the SPH approach, a singular strategy of computational fluid dynamics in line with the mesh-free method, after which enhance the tactic utilizing an arbitrary Lagrange Euler (ALE) formalism. in addition they clarify easy methods to enhance the accuracy of the mesh-free integration method, with precise emphasis at the finite quantity particle process (FVPM). After describing numerical algorithms for compressible computational fluid dynamics, the textual content discusses the prediction of turbulent complicated flows in environmental and engineering difficulties. The final bankruptcy explores the modeling and numerical simulation of loose floor flows, together with destiny behaviors of glaciers. the various purposes mentioned during this booklet illustrate the significance of numerical tools in fluid mechanics. With examine continuously evolving within the box, there isn't any doubt that new strategies and instruments will emerge to provide higher accuracy and velocity in fixing and interpreting much more fluid move difficulties.

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Extra resources for Computational Fluid Dynamics (Chapman and Hall CRC Numerical Analysis and Scientific Computation Series)

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25 27 28 29 29 30 30 30 Introduction Among the numerical methods used for the spatial resolution of partial differential equations (PDE), the finite differences method (FD) and the finite elements (FE) method use a local approximation for the functions; for instance, the FE are based on low-order polynomials, whose support—the subdomain over which the function is not zero—is very reduced with respect to the complete resolution domain. This allows to remove the strong coupling between the approximation functions over each finite element.

This is a major advantage for the computation of high Reynolds number flows (roughly, high energy flows), since the Reynolds number is inversely proportional to the molecular viscosity: ∝ 1/ν. Local methods such as finite differences require high-order discretization to avoid this artifact. 1. Not only a spectral method introduces very little numerical dissipation, but it is also a low-dispersive technique, a property which is important for treating phenomena such as wave propagation. 2. Two characteristics of the spectral methods prevent their use in the computation of complex flows such as industrial or aeronautic flows.

Principles of the weighted residuals method . . . . . . . . . . . . . . Collocation or pseudo-spectral method . . . . . . . . . . . . . . . . . Least squares method . . . . . . . . . . . . . . . . . . . . . . . . . . Method of moments . . . . . . . . . . . . . . . . . . . . . . . . . . . Galerkin approximation . . . . . . . . . .

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Computational Fluid Dynamics (Chapman and Hall CRC Numerical Analysis and Scientific Computation Series) by Frederic Magoules


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