Wind tunnel measurement of aerodynamic properties of a tomato canopy

S. Sase, Murat Kacira, T. Boulard, L. Okushima

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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 (m2 m-3), from 0.004 to 0.41 for L = 5, and from 0.003 to 0.3 for L = 6 as Cf 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 Cf = 0.245.

Original languageEnglish (US)
Pages (from-to)1921-1927
Number of pages7
JournalTransactions of the ASABE
Volume55
Issue number5
StatePublished - Sep 2012

Fingerprint

wind tunnels
aerodynamics
Drag coefficient
Lycopersicon esculentum
wind tunnel
Wind tunnels
Aerodynamics
Momentum
canopy
tomatoes
Air
Velocity measurement
Pressure drop
Air Pressure
Porous materials
Permeability
drag coefficient
Experiments
permeability
momentum

Keywords

  • Computational fluid dynamics
  • Drag coefficient
  • Momentum loss coefficient
  • Permeability
  • Porosity
  • Tomato
  • Wind tunnel

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Biomedical Engineering
  • Food Science
  • Forestry
  • Soil Science

Cite this

Wind tunnel measurement of aerodynamic properties of a tomato canopy. / Sase, S.; Kacira, Murat; Boulard, T.; Okushima, L.

In: Transactions of the ASABE, Vol. 55, No. 5, 09.2012, p. 1921-1927.

Research output: Contribution to journalArticle

Sase, S, Kacira, M, Boulard, T & Okushima, L 2012, 'Wind tunnel measurement of aerodynamic properties of a tomato canopy', Transactions of the ASABE, vol. 55, no. 5, pp. 1921-1927.
Sase, S. ; Kacira, Murat ; Boulard, T. ; Okushima, L. / Wind tunnel measurement of aerodynamic properties of a tomato canopy. In: Transactions of the ASABE. 2012 ; Vol. 55, No. 5. pp. 1921-1927.
@article{415f4ba8cf164f05a338f1e6ec199ad5,
title = "Wind tunnel measurement of aerodynamic properties of a tomato canopy",
abstract = "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 (m2 m-3), from 0.004 to 0.41 for L = 5, and from 0.003 to 0.3 for L = 6 as Cf 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 Cf = 0.245.",
keywords = "Computational fluid dynamics, Drag coefficient, Momentum loss coefficient, Permeability, Porosity, Tomato, Wind tunnel",
author = "S. Sase and Murat Kacira and T. Boulard and L. Okushima",
year = "2012",
month = "9",
language = "English (US)",
volume = "55",
pages = "1921--1927",
journal = "Transactions of the ASABE",
issn = "2151-0032",
publisher = "American Society of Agricultural and Biological Engineers",
number = "5",

}

TY - JOUR

T1 - Wind tunnel measurement of aerodynamic properties of a tomato canopy

AU - Sase, S.

AU - Kacira, Murat

AU - Boulard, T.

AU - Okushima, L.

PY - 2012/9

Y1 - 2012/9

N2 - 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 (m2 m-3), from 0.004 to 0.41 for L = 5, and from 0.003 to 0.3 for L = 6 as Cf 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 Cf = 0.245.

AB - 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 (m2 m-3), from 0.004 to 0.41 for L = 5, and from 0.003 to 0.3 for L = 6 as Cf 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 Cf = 0.245.

KW - Computational fluid dynamics

KW - Drag coefficient

KW - Momentum loss coefficient

KW - Permeability

KW - Porosity

KW - Tomato

KW - Wind tunnel

UR - http://www.scopus.com/inward/record.url?scp=84872295787&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872295787&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84872295787

VL - 55

SP - 1921

EP - 1927

JO - Transactions of the ASABE

JF - Transactions of the ASABE

SN - 2151-0032

IS - 5

ER -