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Numerical Study of the Impact of Praestol® Droplets on Solid Walls

In: High Performance Computing in Science and Engineering ´16

Author

Listed:
  • Martin Reitzle

    (Universität Stuttgart, Institut für Thermodynamik der Luft- und Raumfahrt)

  • Norbert Roth

    (Universität Stuttgart, Institut für Thermodynamik der Luft- und Raumfahrt)

  • Bernhard Weigand

    (Universität Stuttgart, Institut für Thermodynamik der Luft- und Raumfahrt)

Abstract

The behaviour of droplets consisting of two different Praestol®; solutions impacting on a dry solid wall was studied. They show a similar but not identical spreading behaviour. This difference is due to the shear-thinning characteristics of Praetol®; 2540 where lower viscosities are reached for smaller shear rates compared to Praetol®; 2500. The results may serve as a basis for future comparisons with Newtonian liquids. The in-house code FS3D was used which is based on a Volume of Fluid method. The parallel performance of the code was analysed by studying the strong and weak scaling behaviour on the Cray CX40 system at the HLRS Stuttgart. Non-ideal speed-up was found which is mostly due to the high communication load in the multigrid solver. A new solver will overcome these limitations in the future.

Suggested Citation

  • Martin Reitzle & Norbert Roth & Bernhard Weigand, 2016. "Numerical Study of the Impact of Praestol® Droplets on Solid Walls," Springer Books, in: Wolfgang E. Nagel & Dietmar H. Kröner & Michael M. Resch (ed.), High Performance Computing in Science and Engineering ´16, pages 375-388, Springer.
    • Handle: RePEc:spr:sprchp:978-3-319-47066-5_25
    DOI: 10.1007/978-3-319-47066-5_25
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