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Recent results of experimentation and DEM modeling of centrifugal fertilizer spreading

机译：离心施肥试验和DEM建模的最新结果

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For the past few decades there has been a growing concern about the environmental implications associated with the use of soil fertilizers. In Europe, over 90% of fertilizer is distributed using spinning disc spreaders. The popularity of spinning disc spreaders lies with their relative low cost. However, the performance of these machines is highly dependent on the particle properties (e.g. friction coefficients, shape). This results in large differences in spread patterns depending on the fertilizer type as well as the prevailing weather conditions (e.g. air humidity). This dependence requires extensive experimental calibration of the spreader for each type of fertilizer. When a new spreader is designed this calibration work has to be largely repeated. DEM is believed to be the key to increase the understanding of the spreading process, the design of better spreaders and a drastic reduction of experimental calibration. The paper reviews recent results in experimentation and modelling of an international research consortium running several industrial research projects on centrifugal fertilizer projects.
机译：在过去的几十年中，人们越来越关注与使用土壤肥料相关的环境影响。在欧洲，超过90％的肥料是通过旋转盘式撒布机分配的。旋转盘式撒布机的普及在于其相对较低的成本。但是，这些机器的性能高度依赖于颗粒特性（例如，摩擦系数，形状）。这导致取决于肥料类型和主要天气条件（例如空气湿度）的传播方式差异很大。这种依赖性要求对每种肥料的撒肥机进行广泛的实验校准。设计新的吊具时，必须大幅度重复此校准工作。人们认为DEM是增加对撒布过程的了解，更好的撒布器设计以及大幅减少实验校准的关键。本文回顾了一个国际研究财团进行实验和建模的最新结果，该财团在离心肥料项目上开展了多个工业研究项目。

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