Numerical Dataset for Non-Newtonian Debris Flow in Stepped Channels: OpenFOAM Calibration, Validation, and Optimization Framework

This dataset contains numerical simulations and validation results of non-Newtonian fluid flow in stepped channels, developed as part of a doctoral research focused on geometric optimization for energy dissipation. The simulations were performed using OpenFOAM, implementing non-Newtonian rheological models (Herschel–Bulkley type) to represent debris-flow-like behavior under controlled hydraulic conditions. The dataset includes: Calibration cases for base channel configurations Validation cases for multiple step heights (H = 0 cm, 7 cm, 10 cm, 14 cm, 16 cm, 28 cm) Time-dependent simulation outputs Velocity field data and flow evolution snapshots Processed results for comparison between configurations Auxiliary files for reproducibility (case setup, parameters, and boundary conditions) The objective of this dataset is to: Support reproducibility of CFD simulations in non-Newtonian open-channel flows Provide benchmark cases for validation of numerical models Enable comparative analysis of energy dissipation mechanisms in stepped geometries Facilitate future optimization studies using CFD and evolutionary algorithms