NUMERICAL SIMULATION OF WIND LOAD CHARACTERISTICS OF SIDE-BY-SIDE MULTI-SQUARE CYLINDERS
This study investigates the wind load characteristics of parallel multiple cylinders. The SST k-ω turbu-lence model is employed to simulate the parallel three cylinders in a uniform flow field with a Reynolds number of 20000. Based on the flow field characteristics of cylinders with different spacings, the variations of aerodynamic coef-ficients and the distribution of wind pressure coefficients for different cylinder spacings are summarized. The results indicate that smaller spacings generate biased flow and suppress vortex shedding from the cylinders, and all three cylinders exhibit significant bias in their average wind characteristics. When the spacing ratio reaches 2.0, the flow field transitions from biased flow to symmetric biased pressure with an increased frequency of vortex shedding but still lower fluctuating wind characteristics compared to a single cylinder. The aerodynamic coefficients and wind pressure coefficients for the cylinders approximate those of a single cylinder at a spacing ratio of 4.0. The results may provide the theoretical support for the wind load code provisions on side-by-side multi-square cylinders.
万方数据
维普
