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Large Eddy Simulation (LES) with Moving Meshes on a Rapid Compression Machine: Part 2: Numerical Investigations Using Euler–Lagrange-Technique

In: High Performance Computing in Science and Engineering `07

Author

Listed:
  • Franco Magagnato

    (University of Karlsruhe, Institute of Fluid Machinery)

  • Martin Gabi

    (University of Karlsruhe, Institute of Fluid Machinery)

  • Thomas Heidenreich

    (University of Karlsruhe, Institute of Reciprocating Engines)

  • Amin Velji

    (University of Karlsruhe, Institute of Reciprocating Engines)

  • Ulrich Spicher

    (University of Karlsruhe, Institute of Reciprocating Engines)

Abstract

The flow inside a simplified one-stroke engine with squared cross section has been calculated with compressible Large Eddy Simulation (LES) using our code SPARC and compared with the measurements on the same geometry. The one-stroke engine has a turbulence generator, which can ether generate a tumble or homogenous turbulence depending on the configuration. By waiting different amount of time after the turbulence generation process a variable turbulence level can be achieved. During the up going motion of the piston the turbulent fuel mixture is compressed and ignited by a row of spark plugs. The simulation has been using more then 8 million points for the space discretization. A space conservation law was used to calculate the grid motion with Euler-Lagrange technique. The mesh was refined in the shear layers and close to the wall so that y+

Suggested Citation

  • Franco Magagnato & Martin Gabi & Thomas Heidenreich & Amin Velji & Ulrich Spicher, 2008. "Large Eddy Simulation (LES) with Moving Meshes on a Rapid Compression Machine: Part 2: Numerical Investigations Using Euler–Lagrange-Technique," Springer Books, in: Wolfgang E. Nagel & Dietmar Kröner & Michael Resch (ed.), High Performance Computing in Science and Engineering `07, pages 419-430, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-74739-0_28
    DOI: 10.1007/978-3-540-74739-0_28
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