International Journal for Numerical Methods in Fluids

Cover image for Vol. 73 Issue 7

10 November 2013

Volume 73, Issue 7

Pages 615–691

  1. Research Articles

    1. Top of page
    2. Research Articles
    1. No-slip consistent immersed boundary particle tracking to simulate impaction filtration in porous media (pages 615–636)

      L. Ghazaryan, D.J. Lopez Penha, S. Stolz, A.K. Kuczaj and B.J. Geurts

      Version of Record online: 11 JUN 2013 | DOI: 10.1002/fld.3815

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      A computational method to study filtration properties of porous filters is proposed. On an example of 3D structured porous media with staggered and in line arrangement of square rods, we show the influence of the inner structure on the filtration characteristics. In both geometries, filtration depends strongly on the particle inertia and the microstructure of the porous medium. The observed dependencies give insight in the design parameters for effective controlled separation of particles by porous filters.

    2. Fourth order finite volume solution to shallow water equations and applications (pages 637–659)

      K. S. Erduran

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/fld.3816

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      Performance of fourth-order solution to shallow water equations by Finite Volume Method with Shock Capturing Schemes has been shown on a compound channel with and without a bridge. The numerical results quite agreed with the experimental ones.

    3. A critical investigation of smoothed particle hydrodynamics applied to problems with free-surfaces (pages 660–691)

      D. Le Touzé, A. Colagrossi, G. Colicchio and M. Greco

      Version of Record online: 23 JUN 2013 | DOI: 10.1002/fld.3819

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      The smoothed particle hydrodynamics method is studied through dedicated 2D and 3D free-surface flow test cases. Numerical aspects of the SPH method, little mentioned in the literature, are highlighted, and the role of numerical errors in the development of spurious acoustic frequencies is discussed. Convergence of the SPH model is heuristically proved on nonlinear prototype tests, and the particle self-redistribution mechanism occurring during the Lagrangian evolution is commented. A higher order SPH model is also proposed, and it is analyzed how on its gain in accuracy is compensated by a loss in robustness.