输送秧苗的气动系统抖动

U. Hallonborg
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引用次数: 0

摘要

当容器化的幼苗通过管道或软管气动运输时,它偶尔会经历振荡运动,称为“摆动”,容器从软管的一边甩到另一边。我们进一步分析了在先前的喂食时间研究中获得的有关这一现象的数据。此外,还进行了实验室研究,研究了不同尺寸和形状的苗木容器假人在不同直径的有机玻璃管道中不同风速下的行为。从先前的喂食时间研究中对摇摆频率的分析和实验室测试的结果都证实了幼苗的摇摆趋势与其容器的形状之间存在协变。尾部面积大的集装箱更容易摇晃。这导致幼苗分化成两组,有末端和较少末端容器的幼苗。无论是基于先前研究的喂食时间,还是基于先前研究的摆动频率,还是基于最近对假人进行的实验室测试中的摆动行为,这种差异都是相同的。
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Wobbling in Pneumatic Systems for Transporting Seedlings
When a containerized seedling is pneumatically transported through a pipe or hose it occasionally undergoes oscillating movements, referred to as “wobbling“, with the container being flung from one side of the hose to the other. Data on this phenomenon obtained in a previous feed-time study were further analyzed. In addition, a laboratory study was carried out in which the behaviours of seedling-container dummies of different sizes and shapes were studied at different air velocities in Plexiglas pipes of various diameters. Both the analyses of the frequencies of wobbling from the previous feed-time study and the results from the laboratory test confirmed that there is covariation between the wobbling tendency of a seedling and the shape of its container. Containers with a large butt-end area tend to wobble more. This leads to differentiation of the seedlings into two groups, seedlings with butt-ended and less butt-ended containers. This differentiation was the same whether it was based on feed times from the previous study, frequencies of wobbling from the previous study, or the wobbling behaviour in the recent laboratory test with dummies.
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来源期刊
European Journal of Forest Engineering
European Journal of Forest Engineering Agricultural and Biological Sciences-Forestry
CiteScore
1.30
自引率
0.00%
发文量
6
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