Wind Tunnel Measurement of Aerodynamic Properties of a Tomato Canopy
| Autor: | Sadanori Sase, Limi Okushima, T. Boulard, Murat Kacira |
|---|---|
| Přispěvatelé: | ProdInra, Migration, Natl Inst Rural Engn, Partenaires INRAE, University of Arizona, Unité Recherches Intégrées en Horticulture (URIH), Institut National de la Recherche Agronomique (INRA) |
| Rok vydání: | 2012 |
| Předmět: |
[SDE] Environmental Sciences
Canopy Drag coefficient [SDV]Life Sciences [q-bio] Biomedical Engineering Soil Science Computational fluid dynamics Atmospheric sciences Permeability Tomato Porosity CONFIGURATION Wind tunnel Pressure drop Hydrology business.industry Chemistry Forestry Aerodynamics FOREST VENTILATION CLIMATE MODEL [SDV] Life Sciences [q-bio] Permeability (earth sciences) [SDE]Environmental Sciences AIR-FLOW SIMULATION PATTERNS GREENHOUSE CFD business Agronomy and Crop Science Momentum loss coefficient Food Science |
| Zdroj: | Transactions of the ASABE Transactions of the ASABE, American Society of Agricultural and Biological Engineers, 2012, 55 (5), pp.1921-1927 |
| ISSN: | 2151-0040 2151-0032 |
| DOI: | 10.13031/2013.42354 |
| Popis: | Publication Inra prise en compte dans l'analyse bibliométrique des publications scientifiques mondiales sur les Fruits, les Légumes et la Pomme de terre. Période 2000-2012. http://prodinra.inra.fr/record/256699; This study was conducted to determine the drag coefficient and the relationship between permeability (K) and momentum loss coefficients (C-f) of a tomato canopy for various leaf area densities. The experiments were conducted in a large-scale wind tunnel system with a tomato canopy The static pressures and air velocity measurements were performed at several heights in the y-direction and various positions in the z-direction in the wind tunnel test section. The relationship between pressure drop and air velocity across the tomato canopy was determined using a porous medium approach. A drag coefficient of 0.31 was obtained for the tomato canopy used in the experiment. The permeability of the tomato canopy ranged from 0.006 to 0.65 for a leaf area density (L) of 4 (m(2) m(-3)), from 0.004 to 0.41 for L = 5, and from 0.003 to 0.3 for L = 6 as C-f changed from 0.1 to 1. Thus, a mature tomato canopy having L = 6 could be used with a canopy permeability of K = 0.017 and a momentum loss coefficient of C-f = 0.245. |
| Databáze: | OpenAIRE |
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