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动态分层孔径计算来自空气流和叶子之间的树冠相互作用模拟
Huiyuan Cui1, Chengde Wang2, Fadian Lu2
1College of Mechanical & Electronic Engineering, Shandong Agricultural University, Tai'an, China.
Frontiers in plant science
|November 3, 2023
概括
这项研究开发了一种新的数值模拟方法,以预测空气流如何影响棉花树冠多孔性和叶子运动. 这项研究有助于更好地理解农业中用于统一喷雾沉积的辅助空气流.
科学领域:
- 农业工程 农业工程
- 计算流体动力学的流体动力学.
- 生物物理学的生物物理.
背景情况:
- 由风驱动的喷旨在在作物树冠上均的滴滴沉积.
- 目前的方法缺乏有效的方法来建模动态树冠多孔性和空气流减弱.
- 复杂的工厂结构阻碍了精确的喷雾输送分析.
研究的目的:
- 分析辅助空气流与棉花树冠结构参数之间的关系.
- 提出一种用于预测和模拟动态树冠多孔性的新方法.
- 了解空气流-叶子相互作用,以优化喷雾沉积.
主要方法:
- 使用Lattice Boltzmann (LB) 和有限元素 (FE) 溶解器开发了一种双向流体结构相互作用模型.
- 模拟棉花叶变形和空气流场分布.
- 通过室内测量和计算流体动力学 (CFD) 后处理与图像分析验证模型,用于孔径计算.
主要成果:
- 与测量相比,数值模拟显示了高精度,最大规范平均绝对误差 (NMAE) 低于20.72%,R2为0.9221
- 经过验证的CFD模型在各种风条件下成功预测了叶子变形和孔径变化.
- 该研究揭示了作物叶子和空气流动力学之间的显著相互作用.
结论:
- 开发的双向流体结构相互作用模型有效模拟动态树冠多孔性.
- 这种方法提供了一种可靠的工具,用于了解农作物树冠内的空气流动行为.
- 这些发现将有助于更好地了解空气流对喷雾沉积的影响,帮助农业实践.
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