A comprehensive database: synchronization sampling of pressure field on rectangular cylinder surface and velocity field around rectangular cylinder

In this study, a comprehensive database of flow past a 2-dimensional rectangular cylinder has been created through wind tunnel testing as Synchronized Particle image velocimetry with Multipoint Pressure Scanners (SPMPS). Three variables as SR, AOA, and turbulence intensity, have been included. The side ratio (SR) ranges within 0.2, 0.4, 0.6, 0.8, 1.0, 1.25, 1.5, 1.75, 2.0, 2.25, 2.5, 2.75, 3.0, 3.25, 3.5, 3.75, 4.0, 4.25, 4.5, 4.75, 5.0. The angle of attack (AOA) is set within 0-90 with a 5-degree interval. Different turbulence intensities are generated by installing various types of wooden and bamboo grids, which can reach turbulence intensity as the basic 0.4%, and the generated 2.2%, 3.6%, 4.3%, 6.8%, 7.6%, and 12.3%. The high-resolution wind tunnel experiments with SPMPS can capture the instantaneous flow properties around the rectangular cylinder as well as the pressure distributions on the rectangular cylinder surfaces. A total of 2394 cases have been tested, which sets a solid foundation for investigating the flow mechanism of flow past rectangular cylinders under different wind conditions, including flow separation, flow reattachment, and turbulent energy dissipation. It also provides a potential for introducing artificial intelligence techniques into predicting flow field around rectangular cylinders.