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TIC2003-07970

1.4-Project Development The work is being carried out without differing significantly from the anticipated plan. Concretely, the work is structured in three main areas of parallel CFD code development, plus a fourth area regarding know-how development concerning PC clusters.

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Activities

1. Code 1: Incompressible Turbulent Flows-DNS-LES

    • 1.1

      2nd order spectro consistent discretization

    • 1.1

      a Discretization

    • 1.1

      b 2nd order Poisson eq. Solution

    • 1.1

      c Time average functions implementation

    • 1.1

      d Extension to non-periodic situations

    • 1.2

      4th order spectro consistent discretization

    • 1.2

      a Spatial and temporal discretization implementation

    • 1.2

      b 4th order Poisson eq. Solution

    • 1.3

      LES models implementation

    • 1.4

      Validation and Applications

  • 2.

    Code 2:

Flows with parabolic spatial structure

    • 2.1

      Mathematical formulation

    • 2.1

      a Chemical reactions: Combustion

    • 2.1

      b Two-phase flows with phase separation

    • 2.1

      c Flows in channels of arbitrary geometry

    • 2.2

      Numerical resolution techniques

    • 2.2

      a Chemical reactions: Combustion

    • 2.2

      b Two-phase flows with phase separation

    • 2.2

      c Flows in channels of arbitrary geometry

    • 2.3

      Parallel software development & code verification

    • 2.4

      a Application and verification of numerical results

    • 2.4

      b Experimental validation

  • 3.

    Code 2:

Turbulent flows with elliptic structure

    • 3.1

      Mathematical formulation

    • 3.2

      Numerical resolution

    • 3.2

      a Grid techniques

    • 3.2

      b Discretization

    • 3.3

      Implementation of code

    • 3.4

      Code validation and verification of numerical results

    • 3.5

      Applications and experimental contrast

  • 4.

    Tools for cluster administration

First Year

Second Year

Third Year

1.4.1-Code for detailed resolution of incompressible turbulent flows by means of DBS-LES methods (Code1)

  • The three-dimensional discretization of Verstapen and Veldman has been implemented in its second and fourth order versions.

  • A parallel direct solver for second and fourth order Poisson equations, optimized for low-cost clusters, which permits the resolution of each Poisson equation with just one message, has been developed and implemented.

  • Time average functions have been implemented.

  • Work on implementation of a new turbulence model analog to LES models is being carried out.

  • Direct simulations of natural convection in closed enclosures have been performed.

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