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http://dx.doi.org/10.5389/KSAE.2021.63.5.063

Wind Tunnel Evaluation of Aerodynamic Coefficients of Thuja occidentalis and Mesh Net  

Lee, Sojin (Division of Animal Environment, National Institute of Animal Science (NIAS))
Ha, Taehwan (Division of Animal Environment, National Institute of Animal Science (NIAS))
Seo, Siyoung (Division of Animal Environment, National Institute of Animal Science (NIAS))
Song, Hosung (Division of Disaster Prevention Engineering, National Institute of Agricultural Sciences (NAS))
Woo, Saemee (Division of Animal Environment, National Institute of Animal Science (NIAS))
Jang, Yuna (Division of Animal Environment, National Institute of Animal Science (NIAS))
Jung, Minwoong (Division of Animal Environment, National Institute of Animal Science (NIAS))
Jo, Gwanggon (Division of Animal Environment, National Institute of Animal Science (NIAS))
Han, Dukwoo (Division of Animal Environment, National Institute of Animal Science (NIAS))
Hwang, Okhwa (Division of Animal Environment, National Institute of Animal Science (NIAS))
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.63, no.5, 2021 , pp. 63-71 More about this Journal
Abstract
Windbreak forests, which have a windproof effect against strong winds, are known to be effective in reducing the spread of odors and dust emitted from livestock farms. The effect of reducing the spread of odors and dust can be estimated through numerical models such as computational fluid dynamics, which require aerodynamic coefficients of the windbreaks for accurate prediction of their performance. In this study, we aimed to evaluate the aerodynamic coefficients, Co, C1, C2, and α, of two windbreaks, Thuja occidentalis and a mesh net, through wind tunnel experiments. The aerodynamic coefficients were derived by the relation between the incoming wind speed and the pressure loss due to the windbreaks which was measured by differential pressure sensors. In order to estimate the change in the aerodynamic coefficient concerning various leaf density, the experiments were conducted repeatedly by removing the leaves gradually in various stages. The results showed that the power law regression model more suitable for coefficient evaluation compared to the Darcy-Forchheimer model.
Keywords
Aerodynamic coefficient; mesh net; windbreak tree; wind tunnel;
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Times Cited By KSCI : 2  (Citation Analysis)
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