School of Architecture, Southwest Jiaotong University, Chengdu, 611756, China.
Department of Mechanical Engineering, Faculty of Engineering, Istanbul Aydin University, Istanbul, 34295, Turkey.
Sci Rep. 2023 May 4;13(1):7277. doi: 10.1038/s41598-023-34071-5.
In this study, the effects of wind on an Eastern Red Cedar were investigated using numerical simulations. Two different tree models were proposed, each with varying bole lengths and canopy diameters. A total of 18 cases were examined, including different canopy diameters, bole lengths, and wind velocities. Using computational fluid dynamics (CFD) methods, the drag force, deformation, and stress of the tree models were calculated under different wind velocities and geometric parameters. A one-way fluid-structure interaction (FSI) method was used to solve the deformation of the tree. Additionally, velocity and pressure distribution around the tree were obtained. The results indicate that wind velocity and geometric parameters of the tree have a significant impact on deformation, drag force, and stress. As wind velocity increases from 15 to 25 m/s, the force on the tree increases substantially. The results also show that the diameter of the canopy has a bigger effect on stress and strain than the bole length. This study provides insights into tree behavior under wind loading for urban planning and design, informing optimal tree selection and placement for windbreak effectiveness and comfortable environments.
本研究采用数值模拟方法研究了风对东方红杉的影响。提出了两种不同的树木模型，每个模型的树干长度和树冠直径都有所不同。共研究了 18 种情况，包括不同的树冠直径、树干长度和风速。利用计算流体动力学（CFD）方法，根据不同的风速和几何参数计算了树木模型的阻力、变形和应力。采用单向流固耦合（FSI）方法求解树木的变形。此外，还获得了树木周围的速度和压力分布。结果表明，风速和树木的几何参数对变形、阻力和应力有显著影响。当风速从 15 增加到 25m/s 时，树木所受的力显著增加。结果还表明，树冠的直径对应力和应变的影响比树干长度大。本研究为城市规划和设计中树木在风荷载下的行为提供了见解，为防风效果和舒适环境下的最佳树木选择和布置提供了信息。
