Author(s): Kentaro Tsubaki
The paper focuses on the methods to apply Computational Fluid Dynamics (CFD) on complex ground surface geometry at an urban-landscape scale to simulate storm run-offs. The simulation poses several challenges. First, it must handle free surface conditions where fluid boundaries change over time. Second, while extensive research exists at object, infrastructure, and territorial scales, the urban-landscape scale remains largely unexplored. The simulation domain’s size, defined by the boundary mesh, significantly affects computational intensity, resolution, and outcome suitability. Third, unlike most fluid simulations involving horizontal flows, rain modeling lacks standard methods in current literature. The study tested various boundary setups in 2D shallow-water and 3D simulations to find viable methods at the urban-landscape scale. CFD, a powerful but resource-intensive tool, requires a deep understanding of mathematics, physics, and computational methods to be deployed effectively. The research aims to democratize its ability to visualize complex, time-based phenomena, aiding climate-adaptive surface design in tackling pressing environmental challenges.
Volume Editors
ISBN
978-1-944214-49-4