This paper presents the flow-induced forces over 3-column arrays with different cross-sectional geometries due to the current incidence only, using Computational Fluid Dynamics (CFD) calculations for a low Reynolds number (\(\mathrm{Re}\)). The flow around circular, square, and diamond sections of 3-column arrays was evaluated for stationary conditions (i.e., with no degrees of freedom). These analyses are essential to select the most favorable geometries that minimize the effect of the flow-induced forces, saving time for further investigations. The main results evaluated were drag and lift forces (for individual columns and entire array) and the vorticity field surrounding the arrays. Different relative column spacing ratios (\(S/L\)) and flow incidence angles (\(\alpha\)) were analyzed. The simulations were conducted in a two-dimensional laminar flow, with \(\mathrm{Re}=100\). The numerical code used was OpenFOAM, which makes use of the finite volume method. The results of the forces show that the square section case for \(S/L=2\) and the flow angle of \(\alpha =180^\circ\) has the highest value of total force coefficients, whereas the lowest value occurs for the circular section case of \(S/L=3\) and \(\alpha =90^\circ\).

本文针对低雷诺数（\（\ mathrm {Re} \）），使用计算流体力学（CFD）计算方法，介绍了仅由于电流入射而在具有不同横截面几何形状的3列阵列上的流致力。。对于固定条件（即，没有自由度），对3列阵列的圆形，正方形和菱形截面周围的流动进行了评估。这些分析对于选择最有利的几何形状至关重要，这些几何形状可最大程度地减小流动引起的力的影响，从而节省进一步研究的时间。评估的主要结果是拖动力和提升力（对于单个列和整个阵列）以及阵列周围的涡度场。不同的相对柱间距比（\（S / L \））和流入射角（\（\ alpha \））进行了分析。模拟是在二维层流中进行的，其中\（\ mathrm {Re} = 100 \）。使用的数字代码是OpenFOAM，它利用了有限体积法。力的结果表明，对于\（S / L = 2 \）的正方形截面情况和\（\ alpha = 180 ^ \ circ \）的流动角度，总力系数的值最高，而最低值发生在\（S / L = 3 \）和\（\ alpha = 90 ^ \ circ \）的圆形截面情况下。