Strukturbildung und Durchströmungssimulationen virtueller Grünmix-Packungen

Translated title of the contribution: Generation and porous flow simulation of virtual granular packings

Andrea Höftberger

Research output: ThesisMaster's Thesis

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Abstract

For the sinter process the productivity is as important as the quality of the sinter and thereby bed or packing permeability is seen as one of the key factors. Numerous prior studies experimentally investigated permeability and pressure drop of sinter raw-mix packings. This thesis offers a new approach to the topic based on numerical methodology by application of the digital material laboratory GeoDict for generation of virtual packings of free formed particles. Therefore, different kinds of methods are explored to generate small representative volumes with realistic granular packing structure. Alternatively in a top-down approach, a CT-scan of product sinter was used as a starting point for the generation of ideal dense packings. Structural parameters of the virtual packings were characterized by a combined set of analytical and numerical methods. In the follow-up step the porous gas flow in the virtual model packings is investigated by numerical flow simulations. Permeability and specific pressure drop are evaluated as characteristic parameters. The numerical results are then compared to experimental data and empirical model equations.
Translated title of the contributionGeneration and porous flow simulation of virtual granular packings
Original languageGerman
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Weiß, Christian, Supervisor (internal)
Award date12 Apr 2019
Publication statusPublished - 2019

Bibliographical note

no embargo

Keywords

  • sinter rawmix
  • granular packing
  • packing generation
  • porous flow simulation
  • permeability

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