FLOW-01: A benchmark dataset for aerodynamic noise and wake flow fields generated by circular cylinders in a crossflow

Abstract

Aeroacoustic measurements and numerical predictions are commonly used to determine the sound generation from fluid flows. This work documents the measurement of the aerodynamic sound generation by a circular cylinder in crossflow. Three different velocities are studied, and based on the experimental data, a simplified aeroacoustic sound prediction workflow is presented to estimate the radiated far-field noise. The experimental dataset and the numerical simulation setup in open-source software packages are provided online. The geometrical and flow definitions, along with the experimental dataset, constitute a standardised configuration (called https://doi.org/10.5281/zenodo.13365560) proposed as a validation benchmark for numerical simulation workflows and as a reference for the design of measurement facilities. A strongly simplified 2D numerical simulation using OpenFoam and openCFS is provided with the emphasis to run on a typical personal computer hardware. As a consequence, the provided numerical simulation of the flow is not resolving the turbulent structures nor the 3D characteristics of the flow which are known from experimental and numerical studies.