Browsing by Author "Kschidock, Helena"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    ItemOpen Access
    Development of an Euler-Lagrangian framework for point-particle tracking to enable efficient multiscale simulations of complex flows
    (2023) Kschidock, Helena
    In this work, we implement, test, and validate an Euler-Lagrangian point-particle tracking framework for the commercial aerodynamics and aeroacoustics simulation tool ultraFluidX, which is based on the Lattice Boltzmann Method and optimized for GPUs. Our framework successfully simulates one-way and two-way coupled particle-laden flows based on drag forces and gravitation. Trilinear interpolation is used for determining the fluid's macroscopic properties at the particle position. Object and domain boundary conditions are implemented using a planar surface approximation. The whole particle framework is run within three dedicated GPU kernels, and data is only copied back to the CPU upon output. We show validation for the velocity interpolation, gravitational acceleration, back-coupling forces and boundary conditions, and test runtimes and memory requirements. We also propose the next steps required to make the particle framework ready for use in engineering applications.
  • Thumbnail Image
    ItemOpen Access
    Macro-micro coupling with DuMux and preCICE
    (2023) Kschidock, Helena
    In this work, we present the implementation of a two-scale heat conduction problem in porous media simulation software DuMux , where macro and micro simulations are coupled using the coupling library preCICE, as well as its DuMux adapter and micro manager. We show that multiscale coupled simulations can generally be realised using these software components, and provide a tutorial case for future users. As the same example problem has an existing Nutils implementation, we also compare the results of the various combinations of Nutils and DuMux macro and micro simulations with each other.