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Development of an Aerodynamic Simulation for Studying Microclimate of Plant Canopy in Greenhouse - (1) Study on Aerodynamic Resistance of Tomato Canopy through Wind Tunnel Experiment -  

Lee In-Bok (Rural Systems Engineering, Seoul National University)
Yun Nam-Kyu (Agricultural Structures Engineering, National Institute of Agricultural Engineering)
Boulard Thierry (National Institute of Agricultural Researches, France)
Roy Jean Claude (FEMTO-ST, CREST, University of Franche-Comte, France)
Lee Sung-Hyoun (Agricultural Structures Engineering, National Institute of Agricultural Engineering)
Kim Gyoeng-Won (Agricultural Structures Engineering, National Institute of Agricultural Engineering)
Lee Seung-Kee (Div. of Bio-industry Engineering, Kongju National University)
Kwon Soon-Hong (School of Biosystems Engineering, Pusan National University)
Publication Information
Journal of Bio-Environment Control / v.15, no.4, 2006 , pp. 289-295 More about this Journal
Abstract
A computational fluid dynamics (CFD) numerical model has been developed to effectively study the ventilation efficiency of multi-span greenhouses with internal crops. As the first step of the study, the internal plants of the CFD model had to be designed as a porous media because of the complexity of its physical shapes. In this paper, the results of the wind tunnel tests were introduced to find the aerodynamic resistance of the plant canopy. The Seogun tomato was used for this study which made significant effects on thermal and mass exchanges with the adjacent air as well as internal airflow resistance. With the main factors of wind speed, static pressure, and density of plant canopy, the aerodynamic resistance factor was statically found. It was finally found to be 0.26 which will be used later as an input data of the CFD model. Moreover, the experimental procedure of how to find the aerodynamic resistance of various plants using, wind tunnel was established through this study.
Keywords
aerodynamic resistance; computational fluid dynamics (CFD); crop heterogeneity; greenhouse; tomato; wind tunnel;
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