2018/05/31 by Jørgen R. Aarnes, J. R. Aarnes, N. E. L. Haugen +3 · 11 citations
Engineering · Physics and Astronomy · #Cartesian coordinate system #Compressibility #Cylinder #Flow (mathematics) #Fluid Dynamics and Vibration Analysis #Grid #Interpolation (computer graphics) #Lattice Boltzmann Simulation Studies #Particle (ecology) #Particle Dynamics in Fluid Flows #Regular grid #Smoothed-particle hydrodynamics #Stokes number #physics.comp-ph #physics.flu-dyn
paper · pdf · doi:10.1080/10618562.2019.1593385
published in International journal of computational fluid dynamics 33(1-2), 43-58 (Taylor & Francis) · 25 pages, 7 figures, 4 tables. Manuscript is in review
openalex created_date 2018/06/01 · arxiv created 2018/07/03 · openalex publication_date 2019/02/07 · arxiv updated 2019/05/22 · openalex updated_date 2026/08/05
An overset grid method was developed to investigate the interaction between a particle-laden flow and a circular cylinder. The method is implemented in the Pencil Code, a high-order finite-difference code for compressible flow simulation. High-order summation-by-parts operators were used at the cylinder boundary, and both bi-linear Lagrangian and bi-quadratic spline interpolation were used to communicate between the Cartesian background grid and the body-conformal cylindrical grid. The performance of the overset grid method was assessed to benchmark cases of steady and unsteady flows past a cylinder. Results show high-order accuracy and good agreement to the literature. Particle-laden flow simulations were performed, with inertial point particles impacting on a cylinder. The simulations reproduced results from the literature at a significantly reduced cost. Further, an investigation into blockage effects on particle impaction revealing that the previously published DNS data is less accurate than assumed for particles with very small Stokes numbers.