基于虚拟模型的雾滴与叶片的交互行为分析

发布时间：2018-05-21 06:13

本文选题：机械化 + 农药　；参考：《农业工程学报》2017年14期

【摘要】：该文针对现有雾滴与植物叶片交互行为的研究局限于水平叶片的问题,提出了一种基于试验的液滴与不同倾角的植物叶片交互行为的模拟方法,并设计了一种新的液滴弹跳方向计算方法。首先利用微距高速摄像机对液滴在不同倾角的叶片上的静态接触角大小做了精确测量,并拟合了其随叶片倾角增大的变化规律,然后以此将弹跳判定公式推广到0°~50°范围内任意倾斜的叶片上。在液滴弹跳方向计算上引入了蒙特卡洛法,代替了原有的镜面反射计算液滴弹跳方向。模拟结果表明该方法能够较真实的模拟液滴与任意倾斜叶片的弹跳判定、碰撞、驻留以及飞溅现象。该文提出的方法,为研究雾滴与叶片的交互行为提供新的思路,使得模拟过程的计算量相对较小,为植物冠层与大量雾滴交互的沉积量计算和大规模植物场景与雾场交互的实施绘制提供了技术参考。
[Abstract]:In this paper, a new method of simulating the interaction between the droplets and the different dip angles of the plant leaves is proposed based on the study of the interaction between the current fog droplets and the plant leaves, and a new method for the calculation of the direction of the drop of droplets is designed. The size of the static contact angle on the blade is measured accurately, and the law of the change with the increase of the blade inclination is fitted, and then the jump determination formula is extended to the blade with any inclination in the range of 0 ~50 degrees. The Monte C Lofa is introduced in the calculation of the drop direction of the droplet and replaced by the original mirror reflection calculation of the drop bouncing square. The simulation results show that the method can simulate the bouncing, collision, residency and spatter of the droplets and any inclined blades. The method proposed in this paper provides a new idea for the study of the interaction between the droplets and the blades, which makes the calculation of the simulation process relatively small and is the deposition of the interaction between the plant canopy and a large number of droplets. It provides a technical reference for volume calculation and implementation of large-scale plant scene and fog interaction.
【作者单位】：浙江工业大学计算机科学与技术学院;中国水稻研究所水稻生物学国家重点实验室;
【基金】：国家自然科学基金资助项目(61571400,31471416) 浙江省自然科学基金资助项目(LY14C130015)
【分类号】：S491;TP391.9

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