International Journal for Numerical Methods in Fluids

Cover image for Vol. 72 Issue 4

10 June 2013

Volume 72, Issue 4

Pages 403–504

  1. Research Articles

    1. Top of page
    2. Research Articles
    1. Analysis of an iterative penalty method for Navier–Stokes equations with nonlinear slip boundary conditions (pages 403–413)

      Xiaoxia Dai, Peipei Tang and Minghui Wu

      Article first published online: 14 OCT 2012 | DOI: 10.1002/fld.3742

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      The dependency between the penalty factor ϵ and mesh size h is eliminated by the iterative penalty method. The computation required is not very large when the optimal solution is reached.

    2. Incompressible Roe-like scheme for turbulent flows (pages 414–426)

      Ali Atashbar Orang and Seyed Esmail Razavi

      Article first published online: 24 OCT 2012 | DOI: 10.1002/fld.3746

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      In this paper, a Roe-like scheme in finite volume method for incompressible turbulent flows with the Spalart-Allmaras turbulence model is presented. For validation, numerical tests are conducted to flow over a circular cylinder and NACA0012 hydrofoil. Results presented in the figures confirm the superiority of the scheme regarding accuracy and faster convergence.

    3. SPH for 3D floating bodies using variable mass particle distribution (pages 427–452)

      Pourya Omidvar, Peter K. Stansby and Benedict D. Rogers

      Article first published online: 7 NOV 2012 | DOI: 10.1002/fld.3749

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      Smoothed particle hydrodynamics is used to simulate a floating body in heave motion using variable particle mass distribution. Numerical results show good comparison with experimental data for shapes including a 3D cone and wave energy converter, the ‘Manchester Bobber’, in extreme waves. Using a refined mass distribution in a pre-selected area avoids dynamic particle refinement and leads to a computational speedup of more than 600% or much improved results for a given number of particles.

    4. Mesh adaptation for simulation of unsteady flow with moving immersed boundaries (pages 453–477)

      C.H. Zhou and J.Q. Ai

      Article first published online: 3 DEC 2012 | DOI: 10.1002/fld.3751

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      In each adaptation period, the mesh is refined in the regions where the solution evolves or the moving bodies pass and is unrefined in the regions where the phenomena or the bodies deviate. There is no lag between mesh and solution, and the adaptation frequency can be controlled to reduce the errors due to solution transferring. The number of mesh nodes can be reduced greatly when using a nonboundary-conforming method to simulate complex moving-boundary flows.

    5. A Roe scheme for a compressible six-equation two-fluid model (pages 478–504)

      Alexandre Morin, Tore Flåtten and Svend Tollak Munkejord

      Article first published online: 13 NOV 2012 | DOI: 10.1002/fld.3752

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      A Roe scheme for the six-equation two-fluid model is derived.

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